Questions and Answers on General Science (Set 1) consists of 10 MCQ to make you understand various
terms used in daily life and are important as well as exam point of view like IAS, PSC, SSC, Railway etc.
1. Anatomy is a branch of Science which deals with:
A. Structure of animals and plants
B. Functioning of body organs
C. Animal behavior
D. Cells and tissues
Ans. A
2. Oncology is the study of:
A. Birds
B. Cancer
C. Mammals
D. Soil
Ans. B
3. Numismatics is the study of:
A. Coins
B. Numbers
C. Stamps
D. Space
Ans. A
4. Eugenics is the study of:
A. Different races of mankind
B. Genetics of plants
C. People of European region
D. Altering human beings by changing their genetic components.
Ans. D
5. Ornithology is the:
A. Study of plants
B. Study of bones
C. Study of noise
D. Study of birds
Ans. D
6. Epidemiology is the study of:
A. Endodermis disease
B. Dermis disease
C. Epidemic disease
D. None of the above
Ans. C
7. The energy of food is measured in:
A. Calories
B. Celsius
C. Kelvin
D. None of the above
Ans. A
8. Name the instrument that is used to measure Relative Humidity?
A. Hygrometer
B. Hydrometer
C. Barometer
D. Mercury Thermometer
Ans. A
9. Name an instrument which is used to measure the Density of milk?
A. Lactometer
B. Hydrometer
C. Barometer
D. Hygrometer
Ans. A
10. Name an instrument used to measure electric resistance?
A. Ohmmeter
B. Electrometer
C. Galvanometer
D. Spectrometer
Ans. A
Computer is an electronic device for processing information and performing calculations; follows a
program to perform sequences of mathematical and logical operations. Information is the study or use
of systems (especially computers and telecommunications) for storing, retrieving, and sending
information.
1. Which of the following is the first calculating device?
A. Abacus
B. Calculator
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C. Turing Machine
D. Pascaline
Ans: A
2. Who invented mechanical calculator called Pascaline?
A. Charles Babbage
B. Blaise Pascal
C. Alan Turing
D. Lee De Forest
Ans: B
3. Who among the following considered as the 'father of artificial intelligence'?
A. Charles Babbage
B. Lee De Forest
C. John McCarthy
D. JP Eckert
Ans: C
4. Which was the world's first successful electronic computer?
A. PARAM
B. CRAY-1
C. Pascaline
D. ENIAC electronic Numerical Integrator and computer
Ans: D
5. Who among the following used the term computer worm for the first time?
A. John Brunner
B. Alan Turing
C. John McCarthy
D. JP Eckert
Ans: A
6. Which was first virus detected on ARPANET, the forerunner of the internet in the early 1970s?
A. Exe Flie
B. Creeper Virus
C. Peeper Virus
D. Trozen horse
Ans: B
7. Find out the correct definition of Wide Area Network (WAN)?
A. It is a programming language with strong abstraction from the details of the computer.
B. It is a collection of computers interconnected with each other through cables to share their data,
information and other common hardware resources.
C. A computer network that covers a broad area (i.e., any network, whose communications links cross
metropolitan, regional or national boundaries).
D. A computer network covering a small physical area like a home, office or small groups of buildings,
such as a school or an airport.
Ans: C
8. Select the example of application software of computer:
A. Ms Word
B. Ms Excel
C. Both A and B
D. MS-DOS
Ans: C
9. Which of the following is also called translator?
A. Data representation
B. MS-DOS
C. Operating System
D. Language Processor
Ans: D
10. How the quality of printer is measured?
A. Alphabet per strike
B. Words per Inch
C. Strike per Inch
D. Dots per Inch
Ans: D
Questions and Answers on General Science (Part 2) consists of 10 MCQ to analyse various terms and
phenomena’s used in daily life and in general which are important for various competitive examinations
like IAS, PSC, SSC, Railway etc.
1. Name an instrument used to measure the intensity of earthquakes?
A. Richter Scale
B. Ammeter
C. Hyetometer
D. Oometer
Ans. A
2. Fathometer is used to measure:
A. Earthquakes
B. Rainfall
C. Ocean depth
D. Sound intensity
Ans. C
3. Coronagraph is used for:
A. Study the veins
B. Studying Blood Pressure
C. Studying the arteries
D. Observing and often photographing the sun’s corona.
Ans. D
4. What do you understand by Aerodynamics:
A. It is a science of movement in a flow of air or gas.
B. It is a science of generative organs.
C. It is a science of pleasure and pain.
D. None of the above
Ans. A
5. What is Bryology?
A. Study of food
B. Study of fruit
C. Study of mosses and liverworts
D. Study of rings
Ans. C
6. Chirology is the study of:
A. Hands
B. Feet
C. Comets
D. Skull
Ans. A
7. Entozoology is the study of:
A. Enigmas
B. Glands
C. Enzymes
D. Parasites that live inside larger organisms.
Ans. D
8. Study of increasing the habitability of the earth is termed as:
A. Geology
B. Geotechnics
C. Geoponics
D. Geogony
Ans. B
9. Thalassography is the science of:
A. Sea
B. Animal tissues
C. Humidity
D. Measuring heights
Ans. A
10. What is the meaning of the term Topology?
A. It is the study of places and natural features.
B. Study of hair and its disorders.
C. It is the study of shape and features of the moon.
D. Study of theological salvation.
Ans. A
Questions and Answers on General Science (Set 3) consists of 10 MCQ to analyse various inventions and
phenomena’s in general which are important for various competitive examinations like IAS, PSC, SSC,
Railway etc.
1. Ball-Point pen is invented by:
A. Waterman
B. Oscar
C. Wilson
D. Lazlo Biro
Ans. D
2. Logarithm tables were invented by:
A. J.J. Thompson
B. John Napier
C. Paul Ehrlich
D. A.G. Bell
Ans. B
3. Who had invented zero?
A. Egyptians
B. Greeks
C. Indians
D. None of the above
Ans. C
4. Aeroplane was invented by:
A. Wright Brothers
B. Edward Jenner
C. John Douglas
D. None of the above
Ans. A
5. Blaise Pascal is associated with:
A. Bicycle
B. Speed
C. Calculator
D. Electricity
Ans. C
6. Who discovered that plants have life?
A. Edward Jenner
B. J.C. Bose
C. Louis Pasteur
D. Darwin
Ans. B
7. The telephone was invented by:
A. Einstein
B. Robert Hook
C. John Napier
D. Alexander Graham Bell
Ans. D
8. The velocity of light was first measured by:
A. Romer
B. Thomas Alva Edison
C. James Watt
D. Faraday
Ans. A
9. Doctor’s Thermometer was invented by:
A. Newton
B. Fahrenheit
C. Louis Pasteur
D. None of the above
Ans. B
10. Who had discovered oxygen?
A. Rutherford
B. William Harvey
C. Priestly
D. Galileo
Ans. C
1. Which of the following pairs is incorrect?
A. Roentgen: X-Ray
B. Newton: Law of Gravitation
C. Faraday: Diffusion of gases
D. Pasteur: Bacteriology
Ans. C
2. Name the scientist who had discovered that earth revolves round the sun?
A. Copernicus
B. James Arkwright
C. Marconi
D. J. Kepler
Ans. A
3. Artificial ‘gene’ was created by:
A. Meghnad Saha
B. D. Rutherford
C. Hargobind Khorana
D. Oparin
Ans. C
4. Small Pox vaccine was invented by:
A. A. Fleming
B. Ronald Ross
C. James Chadwick
D. Louis Pasteur
Ans. D
5. The Chemical evolution of life was proposed by:
A. Newland
B. Darwin
C. Oparin
D. William Caxton
Ans. C
6. Who had given the phenomena of Blood Circulation?
A. William Harvey
B. Louis Braille
C. Elmer A. Sperry
D. Joseph Lister
Ans. A
7. Which of the following pairs is incorrect?
A. Microwave Oven : Charles Wheatstone
B. LCD : Hoffmann-La Roche
C. Positron : Carl D. Anderson
D. Pressure Cooker: Alexander Twining
Ans. D
8. Who had given the concept of Photovoltaic effect?
A. Alfred Wegner
B. Edmund Becquerel
C. Leucippus
D. Thomas Kibble
Ans. B
9. Who had given the theory of Plate tectonics?
A. Ernest Rutherford
B. John Bardeen
C. Max Planck
D. Alfred Wegener
Ans. D
10. Who introduced metric system?
A. France Government
B. Indian Government
C. European Government
D. None of the above
Ans. A
1. Where was the World Wide Web created and in which year?
A. CERN, 1990
B. Photonics 21, 1989
C. CLUSTER. 1995
D. GikII, 1993
Ans : A
2. Which of the following is the function of F4 key?
A. Moves cursor to writing web address at the address bar.
B. Opens the Measurements toolbar in Quark 5.0.
C. Opens the help page of the working program.
D. Repeats last action performed while typing in Microsoft Word.
Ans: D
3. What is CPU?
A. The unit that transform input into output.
B. IT is a collection of data arrange in row.
C. It is the electronic circuitry within a computer that carries out the instructions of a computer program.
D. None of the above
Ans: C
4. Which out of the following is the file extension of for all Word documents?
A. Txt
B. Doc
C. PDF
D. Word
Ans: B
5. What is the method by which the user points to a picture or icon of what they want and clicks the
mouse button called?
A. Graphical User Interface
B. Graphical Utility Interface
C. Graphical User Information
D. Graphical Utility Information
Ans: A
6. Name the person who invited the QWERTY keyboard layout design?
A. Christopher Latham Sholes
B. Albert Atwood
C. Emik Bentov
D. Anthony Adducci
Ans : A
7. Charles Babbage is usually referred to as the 'Father of Computers' what was first machine he
invented called?
A. Finite differences
B. Difference engine
C. Analytical Engine
D. Babbage Engine
Ans : B
8. Picture element is short for which word?
A. PenTile
B. Viewport
C. Scene graph
D. Pixel
Ans: D
9. Out of the following which can be both an input and an output device?
A. Network cards
B. Sound card
C. Graphics card
D. All of the above
Ans: D
10. What acronym is usually used to refer to word processing where the file you are working on as
seen on the screen will be the same when it is printed out?
A. What You Get IS What You See
B. What You Want Is What You See
C. What You See Is What You Get
D. What You Get Is What You Want
Ans : C
1. What is used to send control messages including errors?
A. IMPC packets
B. ICMP packets
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C. PCIM packets
D. IPMC packets
Ans: B
2. What does SSL stand for?
A. Security System Law
B. Security System Layers
C. Secure Socket Layer
D. None of the above
Ans: C
3. What’s is the functionality of MAC (Media Access Control) ?
A. It an address unique to every piece of network hardware
B. It’s an address unique to every piece of computer
C. It is an hidden folder used for the recovery purpose
D. None of the above
Ans : A
4. In which year Deep Purple a super computer beat chess wizard Garry Kasparov?
A. 1996
B. 1998
C. 1995
D. 1997
Ans: D
5. The speed of a CPU is measured in what?
A. Hertz (Hz)
B. Megahertz
C. Gigyabtyes
D. Byte
Ans : A
6. Which of the following is a command prompt command for Microsoft Windows?
A. Meg
B. Power
C. Ping
D. Petabyte
Ans : A
7. Which type of memory that is held even after the computer is turned off?
A. State Memory
B. Flash memory
C. Random Memory
D. Secure Memory
Ans : B
8. What will you associate the term Social Engineering when it comes to computers?
A. Hacking
B. Malware
C. Worms
D. Trojans
Ans : A
9. Name the service that allows you to receive emails?
A. POP7
B. POP2
C. POP1
D. POP3
Ans : D
10. Out of the following what kind of hackers are considered as good hackers?
A. Black Hat Hackers
B. Gray Hat Hackers
C. White Hat Hackers
D. Red Hat Hackers
Ans : C
1. Which Polymer is used in making non-stick kitchen ware?
A. Nylon
B. Teflon
C. Polystyrene
D. Bakelite
Ans. B
2. Name the polymer used in making bullet proof glass?
A. Melamine
B. Bakelite
C. Lexan
D. Vinyl rubber
Ans. C
3. For pipe insulation which polymer is used?
A. PVC
B. Polythene
C. Teflon
D. None of the above
Ans. A
4. Name the polymer that can have strong intermolecular forces?
A. Polyester
B. Teflon
C. Vinyl Rubber
D. Polypropene
Ans. A
5. Soda bottles are made up of:
A. Polyethylene Terephthalate
B. Polyester
C. Polystyrene
D. Poly Styrene Butadiene
Ans. A
6. Name the synthetic polymer that resembles like natural rubber?
A. Polypropene
B. Neoprene
C. Nylon
D. Chloroprene
Ans. B
7. Name the thermoplastic polymer?
A. Bakelite
B. Melamine
C. Polythene
D. Teflon
Ans. D
8. Name the polymer which is used for making ropes?
A. Polypropene
B. Polyester
C. Polystyrene
D. None of the above
Ans. B
9. Name the condensation polymer?
A. Butyl rubber
B. Acrilan
C. Orlon
D. Bakelite
Ans. D
10. The repeating units or building blocks from which polymer is made up of is known as:
A. Resins
B. Plastics
C. Blocks
D. Monomers
Ans. D
1. The process of transfer of hereditary character from one generation to another is known
as...........?
A. Genes
B. Mutation
C. Variation
D. Genetics
Ans. D
2. Who is known as father of genetics?
A. Gregor Mendel
B. Augustinian friar
C. Norman Borlaug
D. M.S Swaminathan
Ans. A
3. Who coined the term Mutation?
A. James Watson
B. Herman Joseph Muller
C. Hugo de Vries
D. None of the above
Ans. C
4. Which term of genetics represents the potential ability of a plant cell to grow into a
complete plant?
A. Pluripotency
B. Totipotency
C. Cloning
D. Variation
Ans. A
5. Name the chromosome found in the cells which are responsible for characters other than
sex chromosomes?
A. Autosomes
B. Genome
C. Mitochondrial chromosome
D. Y chromosome
Ans. A
6. What do you mean by law of dominance?
A. When offspring shows the characters of generation.
B. When Offspring of cross breed parent only show dominant characters in F1 generation.
C. When offspring of cross breed parent only show dominant characters in F2 generation.
D. In F2 generation both the character which is governed by gene are separated.
Ans. B
7. A sudden change in the gene which is heritable from one generation to other is known as?
A. Variation
B. Cloning
C. Totipotency
D. Mutation
Ans. D
8. Which plant Gregor Mendel had cross breed for his experiment?
A. Onion plant
B. Carrot plant
C. Pea plant
D. Lily plant
Ans. C
9. Which of the following process is an exception of Mendel Law?
A. Mutation
B. Variation
C. Cloning
D. Linkage
Ans. D
1. With reference to human nutrition, consider the following:
(i) Vitamin A
(ii) Vitamin B2
(iii) Vitamin E
Green leafy vegetables are the rich source of which of the following Vitamins?
A. (i) and (ii)
B. (ii) only
C. (i) and (iii)
D. (i), (ii) and (iii)
Ans. D
2. How many bones an adult human skeleton consists of:
A. 204 bones
B. 206 bones
C. 208 bones
D. 214 bones
Ans. B
3. In the human body, the blood enters the aorta of the circulatory system from the
A. Left atrium
B. Left Ventricle
C. Right atrium
D. Right ventricle
Ans. B
4. In a child of 3-4 years milk teeth do not include:
A. Incisors
B. Canines
C. Molars
D. Premolars
Ans. C
5. How much of the volume of urine is produced in an adult human every 24 hours?
A. 1 litre
B. 1.5 litres
C. 3 litres
D. 5 litres
Ans. B
6. In which part of an eye a pigment is present which is responsible for brown, blue or black eyes?
A. Cornea
B. Choroid
C. Iris
D. Vitreous Body
Ans. C
7. A Universal donor person have a blood group:
A. A
B. AB
C. O
D. B
Ans. C
8. Name the gland which controls blood pressure?
A. Thalamus Gland
B. Adrenal Gland
C. Thyroid Gland
D. Pancreas Gland
Ans. B
9. In which organ of the human body are the lymphocytes cells formed?
A. Liver
B. Bone Marrow
C. Pancreas
D. Spleen
Ans. B
10. A human disorder cretinism is caused due to the under secretion of:
A. Adrenalin hormone
B. Cortisone hormone
C. Glucagon hormone
D. Thyroxin hormone
Ans. D
Hence, we can say that tissues are grouped together to form organs in the body and when these
organs work together in a systematic manner forms an organ system. Each organ has a specific
shape like the heart consists of specialised types of muscle tissues, which rhythmically contracts
and expands to provide heart pumping action. And in this way blood flows in all parts of our
human body. Set VI will further help you to understand working and importance of these organ
systems.
1. Which organ of the human body produces a fluid known as bile?
A. Pancreas
B. Gall Bladder
C. Kidney
D. Liver
Ans. D
2. Which of the following is not a function of liver?
A. Regulation of Blood Sugar
B. Storage of Blood
C. Filtering the blood
D. Reproduction
Ans. D
3. Heart is made up of:
A. Non-Striated muscle
B. Cardiac muscle
C. Adipose Tissue
D. Striated Muscle
Ans. B
4. Where does the digestion of protein starts in our body?
A. Mouth
B. Stomach
C. Duodenum
D. Intestine
Ans. B
5. Name an acid which is secreted in the stomach?
A. Sulphuric Acid
B. Hydrochloric Acid
C. Carbonic Acid
D. Nitric Acid
Ans. B
6. Nerves from the eyes and ears are connected to the
A. Cerebrum
B. Cerebellum
C. Medulla Oblongata
D. Spinal Cord
Ans. B
7. Define Blood Pressure:
A. It is the pressure that blood clot exerts over brain.
B. It is the pressure that blood receives on account of faulty commands from the brain.
C. It is the pressure that fatness or old age exerts on the body’s circulatory system.
D. It is the amount of pressure on the blood as a result of the heart’s pumping function and the
resistance of the arterial walls.
Ans.D
8. Name a blood vessel which carries deoxygenated blood?
A. Aorta
B. Pulmonary Artery
C. Hepatic Artery
D. Pulmonary Vein
Ans. B
9. Name a hormone which controls the blood pressure in the human body?
A. Oxytocin
B. Estrogen
C. Testosterone
D. Vasopressin
Ans. D
10. Name the membranes which are invested by the brain and spinal cord?
A. Arachnoid
B. Pleural Membrane
C. Meninges
D. None of the above
Ans. C
1.Which one of the following waves are used by the common TV remote control?
A.Radio waves
B.Lasers
C.Infrared waves
D.Ultrasonic waves
Ans. C
2.Given bellow are the psychological manifestations of noise pollution.
(i)Constriction of blood vessels
(ii)Increase in the rate of heart beat
(iii)Digestive spasms
(iv)Dilation of pupil of the eye
Select the correct options
A.(i) and (ii) are correct
B.(i) and (iii) are correct
C.(ii) and (iv) are correct
D.(i), (ii), (iii) and (iv) are correct
Ans. D
3.Which gas is safe and an effective extinguisher for all confined fires?
A.Nitrogen dioxide
B.Carbon dioxide
C.Sulphur dioxide
D.Nitrous Oxide
Ans. B
4.Which one of the following statements is incorrect about laser?
A.It is a technique for producing intense beams of light, ultraviolet or infrared radiation of
different wavelength.
B.Even in diamond laser beam can drill a hole.
C.A variety of lasers have been made from solids like the ruby crystal and semi conducting
materials, liquids and gases.
D.All waves in laser, travel in phase.
Ans. A
5.Which one of the following elements the drum of a Photostat machine is made up of:
A.Aluminium
B.Selenium
C.Barium
D.Caesium
Ans. B
6.If we say the child has an IQ of 100, what does this means?
A.The performance of the child is below average.
B.The performance of the child is above average.
C.The mental age of the child is equal to his actual age.
D.The performance of the child cannot be better.
Ans. C
7.Which bacteria is responsible for the formation of curd?
A.Lactic acid bacteria
B.Lactobacillus Acidophillus
C.Lactobacillus aureus
D.Bacillus radicicola
Ans. B
8.Which one of the following bacteria present in the soil produces a peculiar smell if it rains on
perched soil?
A.Streptomycetes
B.Staphymycetes
C.Diplomycetes
D.Micrococcus
Ans. A
9.In poorly ventilated buildings which one of the following inert gases can be accumulated?
A.Helium
B.Neon
C.Argon
D.Radon
Ans. D
10.Honey is sweeter than cane sugar or corn syrup. Which one of the following carbon sugars
is responsible for this?
A.Dextrose
B.Levulose
C.Sucrose
D.Fructose
Ans. B
1. Which of the following has pH value 7?
(A) Pure water
(B) Neutral Solution
(C) Basic Solution
(D) Acidic Solution
(E) None of the above/ More than one of the above
Answer. B
2. Which of the following does not contain neutrons?
(A) Oxygen
(B) Nitrogen
(C) Hydrogen
(D) Copper
(E) None of the above/ More than one of the above
Answer. C
3. Who discovered DNA?
(A) James Watson and Francis Crick
(B) Gregor Mendel
(C) Johannsen
(D) Hargovind Khorana
(E) None of the above/ More than one of the above
Answer. A
4. Body temperature is regulated by
(A) Thalamus
(B) Hypothalamus
(C) Cerebellum
(D) Medulla
(E) None of the above/ More than one of the above
Answer. B
5. Choose the correct statement.
(A) Wavelength of red light is less than violet light.
(B) Wavelength of red light is more than violet light.
(C) Wavelength of violet light is more than green light.
(D) Wavelength of violet light is more than yellow light.
(E) None of the above/ More than one of the above
Answer. B
6. The unit of electric power is
(A) Ampere
(B) Volt
(C) Coulomb
(D) Watt
(E) None of the above/ More than one of the above
Answer. D
7. In electrical motor
(A) Heat is converted into electrical energy
(B) Electrical energy is converted into heat
(C) Electrical energy is converted into mechanical energy
(D) Mechanical energy is converted into electrical energy
(E) None of the above/ More than one of the above
Answer. C
8. The main component of Greenhouse gases is:
(A) Carbon Dioxide
(B) Methane
(C) Nitrous Oxide
(D) Ozone
(E) None of the above/More than one of the above
Answer. E
9. The powerhouse of the cell is:
(A) Cell Wall
(B) Mitochondria
(C) Ribosome
(D) Nucleus
(E) None of the above/More than one of the above
Answer. B
10. AIDS is caused by:
(A) Water
(B) Bacteria
(C) Virus
(D) Fungus
(E) None of the above/More than one of the above
Answer. C
11. Which instrument is used to measure humidity?
(A) Hydrometer
(B) Hygrometer
(C) Pyrometer
(D) Lactometer
(E) None of the above/ More than one of the above
Answer. B
12. What is the unit of pressure?
(A) Newton/ sq. Meter
(B) Newton-meter
(C) Newton
(D) Newton/meter
(E) None of the above/ More than one of the above
Answer. A
1. Which of the following is a large blood vessel that carries blood away from the heart?
A. Vein
B. Artery
C. Capillary
D. Nerve
Ans. B
Explanation: The pulmonary artery carries blood from the right side of the heart to the lungs to
pick up a fresh supply of oxygen.
2. Which of the following is not a member of the vitamin B complex?
A. Thiamine
B. Riboflavin
C. Folic acid
D. Ascorbic acid
Ans. D
Explanation: Vitamin B complex consists of 8 vitamins namely B1, B2, B3, B5, B6, B7, B9 and
B12. Vitamin B1 is Thiamine, Vit B2 is Riboflavin, Vit B3 is Niacin, Vit B5 is pantothenic acid, Vit
B6 is pyridoxine, biotin, folic acid and Vit B12 is cyanocobalamin.
3. Fungi are plants that lack:
A. Oxygen
B. Carbon dioxide
C. Chlorophyll
D. None of these
Ans. C
Explanation: We know plants prepare their own food and so are known as autotrophs. With the
help of photosynthesis they make food in which they produce glucose from carbon dioxide and
sunlight. Oxygen is released by plants which is further used by humans and other animals. But
Fungi lack chlorophyll and do not engage in photosynthesis.
4. What makes a reptile a reptile?
A. Cold blooded
B. Warm Blooded
C. Non-Hearing
D. Egg-laying
Ans. D
Explanation: Reptiles skin is covered with hard, dry scales and most reptiles lay eggs. Those
animals which are cold-blooded don't automatically maintain a constant body temperature.
They have to lay out their eggs in the sun to keep their body warm.
5. Which blood vessels have the smallest diameter?
A. Capillaries
B. Arterioles
C. Venules
D. Lymphatic
Ans. A
Explanation: Blood is carried through the body by Blood Vessels. With the help of perfusion
process capillaries supplies blood to the tissues. The diameter of capillary ranges from 5-10
micrometers. The diameter of arteriole is approx. 30 micrometer.
6. Which of the following is an air-borne disease?
A. Measles
B. Typhoid
C. Pink eye
D. None of the above
Ans. A
Explanation: Airborne diseases are the infections spread by airborne transmissions including
Chickenpox, Anthrax, Influenza, Measles, Smallpox, Cryptococcosis and Tuberculosis.
7. A yellow dust appears on the fingers, whenever we touch the middle of a flower. These
tiny yellow grains are one of the most precious substances in nature because they contain the
secret of plant life. What is this dust called?
A. Pollen
B. Sperm
C. Spore
D. Sporocyst
Ans. A
Explanation: The yellow powder is called pollen and the stick that holds it is known as stamen.
8. Which organ of the body produces the fluid known as bile?
A. Liver
B. Pancreas
C. Gall bladder
D. Kidney
Ans. A
Explanation: Liver produces a digestive fluid known as bile. Liver releases Bile into Gall Bladder,
a small, pear-shaped organ located just below your liver in the upper right side of your
abdomen.
9. Which of the following hormones is a steroid?
A. Estrogen
B. Glucagon
C. Insulin
D. Oxytocin
Ans. A
Explanation: Steroid hormone is produced by three endocrine organs. The testes, produces
testosterone; the ovaries, produces estrogen; and the adrenal cortex, produces steroid
hormones such as cortisol and aldosterone. Steroid hormones are derived from cholesterol and
are lipid-soluble molecules.
10. Which one of the following is not a function of the liver?
A. Regulation of blood sugar
B. Enzyme activation
C. Detoxification
D. Reproduction
Ans. D
Explanation: Liver is the body's largest internal organ. It has many functions in the body like it
helps in protein synthesis and blood clotting, manufacturing triglycerides and cholesterol,
glycogen synthesis, and bile production. It also detoxifies chemicals and
1. Assertion (A): A man with O blood group married to a woman of blood group AB then child
will never get an AB group.
Reason (R): Blood group 0 gene is dominant over A, B or AB.
In the above item consist of two statements, one labelled as 'Assertion (A)' and the other
labelled as 'Reason (R)'. Select your answers to these items using the codes given below.
Codes:
A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true
2. Which of the following list of the diseases are deficiency diseases?
I. Simple goitre and Oriental sore
II. Xerophthalmia and colour blindness
III. Night blindness and Marasmus
IV. Beri-beri and Osteomalacia
A. I & II
B. I & III
C. II & III
D. III & IV
3. How many grams of carbohydrate is present in a hen’s egg?
A. 0.61 g
B. 0.5 g
C. 1.3 g
D. 2.5 g
4. What is the total number of permanent incisors in both the upper and lower jaws of the
cattle and buffaloes?
A. 4
B. 8
C. 12
D. 16
5. What is the gestation period of camel?
A. 280 to 300 days
B. 320 to 350 days
C. 365 to 400 days
D. 425 to 440 days
6. Match the correct answer from the codes given below in the lists:
List-I (Animal)
List-II (Life span in years)
a. Cattle
1. 10 to 25
b. Goats
2. 20 to 25
c. Sheep
3. 40
d. Camels
4. 45 to 50
Codes:
A B C D
A. 5 3 2 1
B. 5 4 1 3
C. 2 4 1 3
D. 2 3 4 1
7. From which of the following part of a plant opium is obtained?
A. Dried leaves
B. Dried latex
C. Roots
D. Stem bark
8. Which of the following crop is affected by the "early blight" disease?
A. Potato
B. Rice
C. Sugarcane
D. Wheat
9. Where is the Central Drug Research Institute of India is located?
A. Delhi
B. Bangalore
C. Madras
D. Lucknow
10. Which of the following deficiency causes the dietary deficiency of Xerophthalmia?
A. Protein
B. Vitamin A
C. Riboflavin
D. Unsaturated fatty acids, linoleic and linolenic acids
Question
No.
1
Answer
2
D
3
A
4
B
5
B
6
C
7
B
8
A
9
D
10
B
C
1. How many HIV positive infections that are occurring everyday in the world?
A. 6,000
B. 60,000
Ads by Jagran.TV
C. 600,000
D. 1,000,000
2. Bombyx mori, that produces fine filaments of silk inside the cocoon, is a:
A. Butterfly
B. Dipteran (silkworm)
C. Moth
D. Mulberry plant hemipteran
3. Why was DDT banned which an organ chlorine compound, used first to control malaria,
carried in mosquitoes and later to a variety to insect pests?
A. It brings about a change in sex chromosomes
B. It persists in the environment and bio-accumulates
C. It increases its affinity hundred-fold for haemoglobin preventing its coupling with oxygen
D. All of these
4. What is the reason behind the small shrunken scrotal of an adult bulls straying on Delhi
roads?
A. Congenital defect
B. Negative feedback due to extremely high levels of testosterone
C. Castration
D. All of these
5. Which of the following components increases the effectiveness of the Photosynthesis
process?
A. Ultraviolet
B. Red
C. Blue
D. Infrared
6. What is the weight of human heart?
A. 100 gms
B. 300 gms
C. 800 gms
D. 1000 gms
7. Which of the following gland controls the blood pressure?
A. Thalamus gland
B. Adrenal gland
C. Thyroid gland
D. Pancreas gland
8. In which organ of the human body are the lymphocyte cells formed?
A. Liver
B. Long bone
C. Pancreas
D. Spleen
9. Which of the following is one of the functions of antigen?
A. Lowers body temperature
B. Destroys harmful bacteria
C. Triggers the immune system
D. Used as an antidote to poison
10. Which of the following process that does not involve evolution of CO2?
A. Combustion
B. Respiration
C. Fermentation
D. Photosynthesis
Question
Answer
No.
1
A
2
C
3
B
4
C
5
B
6
B
7
B
8
B
9
C
10
D
1. Name the Glands associated with the Human Digestive System?
A. Salivary Glands and Pancreas
B. Salivary Glands and Liver
C. Liver and Pancreas
D. Salivary Glands, Liver & Pancreas
Ans: D
2. Arrange the correct sequence of the steps involved in the process of Human Digestive
System?
A. Digestion, Ingestion, Assimilation, Egestion and Absorption
B. Ingestion, Digestion, Absorption, Assimilation and Egestion
C. Egestion, Absorption, Digestion, Assimilation and Ingestion
D. Assimilation, Absorption, Ingestion, Digestion and Egestion
Ans: B
3. In which part of the body digestion of protein begins?
A. Pancreas
B. Stomach
C. Small Intestine
D. Large Intestine
Ans: B
4. What is the Function of Hydrochloric Acid?
(i) It makes pepsin enzyme effective.
(ii) It kills bacteria which may enter in stomach with food.
Which of the following statements is/are correct?
A. Only (i)
B. Only (ii)
C. Both (i) and (ii)
D. Neither (i) nor (ii)
Ans: C
5. Name the largest part of the Alimentary canal?
A. Large Intestine
B. Small Intestine
C. Liver
D. Stomach
Ans: B
6. Complete digestion of food occurs in:
A. Stomach
B. Small Intestine
C. Pancreas
D. Large Intestine
Ans: B
7. What is the function of Bile Juice secreted by Liver?
A. It makes the food alkaline.
B. It makes the food acidic.
C. It breaks down the food.
D. None of the above
Ans: A
8. Name the hardest material present in the body?
A. Dentin
B. Pulp
C. Enamel
D. None of the above
Ans: C
9. In which part of our body food gets absorbed?
A. Small Intestine
B. Large Intestine
C. Stomach
D. Liver
Ans: A
10. The undigested food stored in the liver in the form of carbohydrate is called:
A. Pulp
B. Glucose
C. Glycogen
D. Carbohydrate
Ans: C
1. Who discovered cell in 1665?
a) Robert Hook
b) Robert Crook
c) David Thomson
d) Marie Francois
Ans. a)
Explanation: In 1665, the cell was first discovered by Robert Hooke. The cell has a rich and
interesting history that has ultimately provided the way to various scientific advancements of
today.
2. Name an Organelle which serves as a primary packaging area for molecules that will be
distributed throughout the cell?
a) Mitochondria
b) Plastids
c) Golgi apparatus
d) Vacuole
Ans. c)
Explanation: Golgi apparatus is also known as Golgi complex or Golgi body. It is an organelle
that serves as a primary packaging area for molecules that will be distributed throughout the
cell. It is located in the cytoplasm next to the endoplasmic reticulum and near the nucleus of
the cell.
3. Name the outermost boundary of the cell?
a) Plasma membrane
b) Cytoplasm
c) Nuclear membrane
d) None of the above
Ans. a)
Explanation: Plasma Membrane is the outermost boundary of the cell. It is also known as the
cell membrane. It is the membrane found in all cells that separate the interior of the cell from
the outside environment. A cell wall is attached to the plasma membrane on its outside surface
in bacterial and plant cells.
4. Name the process in which the ingestion of material by the cells is done through the plasma
membrane?
a) Egestion
b) Diffusion
c) Osmosis
d) Endocytosis
Ans. d)
Explanation: Endocytosis is the process in which the ingestion of material by the cells is done
through the plasma membrane. Or we can say that it is the process of actively transporting
molecules into the cell by engulfing it with its membrane.
5. Which among the following sentence is not correct about the organelles?
a) They are found in all Eukaryotic cells.
b) They are found in multicellular organisms.
c) They coordinate to produce the cell.
d) They are small sized and mostly internal.
Ans. b)
Explanation: Organelles are found in all Eukaryotic cells. They coordinate to produce the cell.
They are small-sized and mostly internal. Organelle, any of specialised structures inside a cell
that perform a specific function (e.g. mitochondria, ribosomes, endoplasmic reticulum).
Organelles in unicellular organisms are the equivalent of organs in multicellular organisms.
6. Name the process in which the passage of water goes from a region of higher concentration
to a region of lower concentration through a semi permeable membrane?
a) Diffusion
b) Osmosis
c) Both a) and b)
d) Neither a) nor b)
Ans. b)
Explanation: Osmosis is the process in which the passage of water goes from a region of higher
concentration to a region of lower concentration through a semi-permeable membrane.
7. Name an organism that contains a single chromosome and cell division occurs through
fission or budding?
a) Eukaryotes
b) Prokaryotes
c) Bacteria
d) Primitive organism
Ans. b)
Explanation: Prokaryotes contain a single chromosome and cell division occurs through fission
or budding. The usual method of prokaryote cell division is termed binary fission. The
prokaryotic chromosome is a single DNA molecule that first replicates, then attaches each copy
to a different part of the cell membrane.
8. Name the process in which the membrane of a vesicle can fuse with the plasma membrane
and extrude its contents to the surrounding medium?
a) Exocytosis
b) Endocytosis
c) Osmosis
d) Diffusion
Ans. a)
Explanation: Exocytosis is the process in which the membrane of a vesicle can fuse with the
plasma membrane and extrude its contents to the surrounding medium.
9. The jelly-like substance present inside the cell is known as:
a) Cytoplasm
b) Ectoplasm
c) Nucleoplasm
d) None of the above
Ans. a)
Explanation: Cytoplasm is the jelly-like substance present inside the cell and contains other
organelles. It is a thick solution that fills each cell and is enclosed by the cell membrane.
10. Blue-green Algae are:
a) Prokaryotes
b) Eukaryotes
c) Both a) and b)
d) Neither a) nor b)
Ans. a)
Explanation: Blue-green Algae or Cyanobacteria are Prokaryotes. They lack membrane-bound
organelles and nuclei
1. Which of the following statements are correct regarding respiration in plants?
I. Respiration is the process of releasing energy from food.
II. Respiration takes place individually in all parts of the plants like stem, roots, leaves etc.
III. The rate of respiration is slow in plants whereas it is faster in humans and animals.
Select the correct answer from the codes given below:
A. I and III are correct
B. I and II are correct
C. I, II and III are correct
D. None of the above
Ans. C
2. Name the process through which much needed oxygen is supplied to all the cells of the
plants?
A. Diffusion
B. Endosmosis
C. Exosmosis
D. Photosynthesis
Ans. A
3. Due to Water logging:
A. An air is expelled from in-between the particles of soil.
B. Oxygen becomes unavailable to the roots of the plants.
C. Plants respire anaerobically which produces alcohol and kill them.
D. All the above are correct.
Ans. D
4. Respiration in Plants takes place through:
A. Stomata
B. Lenticels
C. Both A and B
D. Only A
Ans. C
5. Consider the following statements:
A. Respiration takes place both day and night.
B. Photosynthesis occurs during day time only.
C. Both A and B are correct.
D. Neither A nor B are correct.
Ans. C
6. Some plants store waste in their fruits in the form of solid bodies called:
A. Raphides
B. Lenticels
C. Stomata
D. Resins
Ans. A
7. Various methods used by plants to get rid of their waste products are:
I. Gaseous waste through stomata and lenticels.
II. Stored solid and liquid waste by shedding leaves, peeling of bark and falling of fruits.
III. By secreting waste in the form of gum and resins.
Which of the following statements is/are correct?
A. I and II are correct.
B. II and III are correct.
C. I and III are correct.
D. I, II and III are correct.
Ans. D
8. Name the waste products secreted by Plants?
A. Carbon Dioxide
B. Oxygen
C. Water Vapour
D. All are correct.
Ans. D
9. Which of the following statements is/are correct?
I. The net gaseous exchange in leaves at night is, oxygen diffuses in and carbon dioxide diffuses
out.
II. Net gaseous exchange during day time is, oxygen diffuses out and carbon dioxide diffuses in.
Select the correct answer from the codes given below:
A. Only I is correct.
B. Only II is correct
C. Both I and II are correct.
D. Neither I nor II is correct.
Ans. C
10. Name an extension of the epidermal cells of a root which is in direct contact with the soil?
A. Root Hairs
B. Internodes
C. Bundle Scars
D. Pith
Ans. A
1. What is the process of intake of nutrients by an organism as well as the utilisation of these
nutrients by the organisms called?
A. Nutrition
B. Photosynthesis
C. Chloroplasts
D. Digestion
Ans. A
2. The mode of nutrition in which an organism makes its own food from the simple inorganic
material like carbon dioxide and water present in the surrounding is called:
A. Heterotrophic nutrition
B. Saprotrophic nutrition
C. Autotrophic nutrition
D. Holozoic nutrition
Ans. C
3. What is the mode of nutrition called in which organisms cannot make its own food from
simple inorganic material and depends on other organisms for its food?
A. Autotrophic nutrition
B. Heterotrophic nutrition
C. Parasitic nutrition
D. Holozoic nutrition
Ans. B
4. When an organism obtains its food from decaying organic matter of dead plants, dead
animals and rotten bread, etc., it is called:
A. Parasitic nutrition
B. Autotrophic nutrition
C. Holozoic nutrition
D. Saprotrophic nutrition
Ans. D
5. The nutrition in which an organism derives its food from the body of another living
organism without killing it, it’s called:
A. Saprotrophic nutrition
B. Parasitic nutrition
C. Holozoic nutrition
D. Autotrophic nutrition
Ans. B
6. The nutrition in which an organism takes the complex organic food materials into its body
by the process of ingestion, the ingested food is digested and then absorbed into the body
cells of the organism:
A. Parasitic nutrition
B. Autotrophic nutrition
C. Holozoic nutrition
D. Heterotrophic nutrition
Ans. C
7. The process by which green plants make their own food from carbon dioxide and water by
using sunlight energy in the presence of chlorophyll, is called:
A. Xanthophylls
B. Stomata
C. Photosynthesis
D. Chloroplast
Ans. C
8. Animals which eat only plants are called:
A. Herbivores
B. Omnivores
C. Carnivores
D. None of the above
Ans. A
9. What is the process of taking food into the body called?
A. Digestion
B. Assimilation
C. Ingestion
D. Egestion
Ans. C
10. The process in which the food containing large, insoluble, molecules is broken down into
small, water soluble molecules is called:
A. Digestion
B. Absorption
C. Ingestion
D. Assimilation
Ans. A
1. The longest fibre on the cell body of a neuron is called:
A. Myelin
B. Nerve endings
C. Axon
D. Dendrites
Ans. C
2. The axon passes the impulse to another neuron through a junction called:
A. Nerve endings
B. Synapse
C. Cytoplasm
D. Nucleus
Ans. B
3. What are those reflex actions called which involve brain?
A. Reflex arcs
B. Cerebral reflexes
C. Spinal reflexes
D. None of the above
Ans. B
4. The chemical substances which coordinate the activities of living organisms and also their
growth are called:
A. Hormones
B. Blood
C. Sodium
D. Cytoplasm
Ans. A
5. When the parent organism splits to form two new organisms, it is called:
A. Budding
B. Spore formation
C. Binary fission
D. Multiple fission
Ans. C
6. The process of getting back a full organism from its body part is called:
A. Spore formation
B. Budding
C. Regeneration
D. Fragmentation
Ans. C
7. The breaking up of the body of a simple organism into two or more pieces on maturing,
each of which subsequently grows to form a complete new organism, is called:
A. Fragmentation
B. Vegetative propagation
C. Binary fission
D. Budding
Ans. A
8. When new plants are obtained from the parts of old plants, without the help of any
reproductive organs, it is called:
A. Vegetative propagation
B. Spore formation
C. Fragmentation
D. Multiple fission
Ans. A
9. When the cut stems of two different plants are joined together in such a way that the two
stems join and grow as a single plant, it is called:
A. Cutting
B. Layering
C. Grafting
D. None of the above
Ans. C
10. The transfer of pollen grains the anther of a stamen to the stigma of a carpel is called:
A. Germination
B. Pollination
C. Fertilisation
D. Tissue culture
Ans. B
1. Those organs which have same basic structure but different functions are called:
A. Analogous organs
B. Speciation
C. Fossils
D. Homologous organs
Ans. D
2. Those organs which have different basic structure but have similar appearance and perform
similar functions are called:
A. Fossils
B. Analogous organs
C. Homologous organs
D. Speciation
Ans. B
3. What are those animals called which eat both plants and animals?
A. Omnivores
B. Herbivores
C. Carnivores
D. Decomposers
Ans. A
4. What is the shedding of flowers, leaves and fruits followed by formation of scar tissue in a
plant called?
A. Abscission
B. Abscisic acid
C. Deciduous
D. Mitosis
Ans. A
5. A group of glands which produce various hormones is called:
A. Respiratory system
B. Excretion
C. Endocrine system
D. Central nervous system
Ans. C
6. Organic constituents of soil formed by complete or partial decomposition of plant and
animal material is called:
A. Fauna
B. Humus
C. Fossil
D. Compost
Ans. B
7. The complex feeding relationships within a community is called:
A. Food chain
B. Food web
C. Trophic level
D. All of the above
Ans. B
8. What are heterotrophs, mostly bacteria and fungi, when obtain food by breaking down
substances in dead protoplasm are called:
A. Omnivores
B. Herbivores
C. Decomposers
D. Carnivores
Ans. C
9. What is the act of supplying water to a field through artificial means called?
A. Irrigation
B. Insecticide
C. Fungicide
D. Monoculture
Ans. A
10. What is ploughing and cultivating the land called?
A. Irrigation
B. Domestication
C. Tilling
D. Weeding
Ans. C
1. In photosynthesis dark reaction, is called so because-
A. It occurs in dark.
B. It does not require light energy.
C. It cannot occur during daytime.
D. It occurs more rapidly at night.
Ans: B
2. Rate of photosynthesis does not depend upon:
A. Quality of light
B. Intensity of Light
C. Duration of Light
D. Temperature
Ans: C
3. For photosynthesis green plants require:
A. Chlorophyll only
B. Light
C. Carbon dioxide and water
D. All of the above
Ans: D
4. Photosynthesis is a _____ process.
A. Catabolic
B. Anabolic
C. Exothermic
D. Metabolic
Ans: B
5. Name the pigment which is responsible for absorption of light in plants?
A. Chlorophyll
B. Stoma
C. Xylem
D. Phloem
Ans: A
6. In bacteria name the colour of light which is responsible for photosynthesis?
A. Ultra-Violet
B. Blue
C. Red
D. None of the above
Ans: C
7. Quantasomes are found in:
A. Cristae of mitochondria
B. Thylakoid membrane of chloroplasts
C. Nucleus membrane
D. Lysosome
Ans: B
8. Name the metal present in chlorophyll ‘a’ and ‘b’?
A. Iron
B. Copper
C. Magnesium
D. Manganese
Ans: C
9. Name the structural unit of photosynthesis?
A. Thylakoid
B. Grana
C. Stroma
D. Chlorophyll
Ans: A
10. Which of the following statements are true regarding Photosystems?
A. Photosystems are arrangements of chlorophyll and other pigments packed into thylakoids.
B. Many Prokaryotes have only one photosystem.
C. Both A and B are correct.
D. Only A is correct.
Ans: C
Therefore, Photosynthesis is an Oxidation-Reduction reaction which takes place in two steps;
light reaction and dark reaction. With the help of Question and Answers we have tried to cover
the whole process and also we come to know how light energy is converted into chemical
energy.
It can be explained via equation also:
6Co2 + 12 H2O -----> C6H12O6 + 6O2 + 6H2O
1. What is the first step in photosynthesis:
A. Generation of ATP
B. Formation of NADPH
C. Through light, excitement of an electron of chlorophyll pigment.
D. Formation of Glucose
Ans. C
2. Due to which reaction PGA is changed into phosphoglyceraldehyde in photosynthesis
process?
A. Oxidation
B. Reduction
C. Electrolysis
D. Hydrolysis
Ans. B
3. What will be the ratio of oxygen produced to that of consumed in daylight hours when the
rate of respiration is less than that of photosynthesis?
A. 1: 1
B. 10: 1
C. 50: 1
D. 5: 1
Ans. B
4. In Photosynthesis process, how many molecules of NADPH and ATP are required to reduce
six molecules of carbon dioxide to glucose?
A. 3 ATP and 2 NADPH
B. 6 ATP and 6 NADPH
C. 12 ATP and 18 NADPH
D. 18 ATP and 12 NADPH
Ans. D
5. Mention the internal factors that influence photosynthesis?
A. Size, position and structure of stomata
B. Maintenance of the turgidity of the leaf cells
C. Relative proportion and distribution of chloroplasts in the mesophyll
D. All of the above
Ans. D
6. Name the external factors that affect photosynthesis process?
A. Light Intensity
B. Carbon dioxide concentration
C. Temperature
D. All of the above
Ans. D
7. Which of the following statements is/are correct related to Dark Reaction:
I. The process involves fixation and reduction of carbon dioxide in the stroma of the chloroplast.
II. Light is necessary for the reaction.
III. It is also known as Calvin Cycle.
Options are:
A. Both I and II are correct
B. Both II and III are correct
C. Both I and III are correct
D. All I, II and III are correct
Ans. C
8. What do you understand by NADP?
A. It is an enzyme
B. It is a co-enzyme
C. A part of s-RNA
D. A part of t-RNA
Ans. C
9. Which of the following statements is/are correct about Light Reaction:
I. In this reaction light energy is absorbed by chlorophyll pigments and converted into chemical
energy.
II. Energy is stored in the form of ATP
III. NADPH2 is generated
Options are:
A. Both I and II are correct
B. Both I and III are correct’
C. Only II is correct
D. All I, II and III are correct
Ans. D
10. Photosynthesis is :
A. An Oxidation-Reduction reaction
B. Synthesis reaction
C. Organic reaction
D. Replacement reaction
Ans. A
Plants are autotrophs as they prepare their own food with the help of photosynthesis and also
green in colour due to the pigment chlorophyll present in the leaves. With the help of questions
we have understood the necessity of it and also the process involved in the preparation of food
and releasing oxygen in the environment.
1. Who had given the theory of evolution of species by natural selection?
A. Darwin
B. Mendel
C. Dalton
D. Morgan
Ans. A
Explanation: Charles Robert Darwin gave the theory of evolution in his book “The Origin of
Species”. The theory proposed by him is known as “The Theory of Natural Selection”.
2. Who is known as the father of genetics?
A. Mendel
B. Darwin
C. Dalton
D. Marie Curie
Ans. A
Explanation: Gregor Mendel is termed as the father of genetics because he has discovered the
basic principles of heredity.
3. Which of the following are the sources which provide evidences for evolution?
A. Homologous organs
B. Analogous organs
C. Fossils
D. All the above
Ans. D
Explanation: The important sources which provide evidences for evolution are homologous
organs, analogous organs and fossils.
4. Name a fossil bird which looks like a bird but has many other features found in reptiles?
A. Dodo
B. Archaeopteryx
C. Flamingos
D. Mouse Bird
Ans. B
Explanation: Archaeopteryx is a fossil bird which looks like a bird but it has many other features
which are found in reptiles.
5. Name the organs which have different basic structure but have similar appearance and
perform similar functions?
A. Analogous organs
B. Homologous organs
C. Both A and B
D. Neither A nor B
Ans. A
Explanation: Analogous organs have different basic structure but have similar appearance and
perform similar functions. Example wings of an insect and a bird have different structures but
similar functions.
6. Who suggested that life must have developed from the simple inorganic molecules like
methane, hydrogen etc. which were present on the earth soon after it was formed?
A. Darwin
B. Marrie Curie
C. Haldane
D. None of the above
Ans. C
Explanation: J.B.S Haldane, a British scientist suggested in 1929 that life must have developed
from the simple inorganic molecules like methane, hydrogen etc. which were present on the
earth soon after it was formed.
7. Aves have evolved from:
A. Amphibians
B. Arthropods
C. Mammals
D. Reptiles
Ans. D
Explanation: Birds evolved from theropod dinosaurs during the Jurassic around 165–150 million
years ago. Birds aren't just closely related to dinosaurs, they really are dinosaurs! This is what
most people mean when they say that birds are reptiles, although technically according to the
phylogenetic system mammals are also reptiles.
8. The theory of origin of life on earth is proposed by:
A. Haldane
B. Stanley Miller
C. Harold C. Urey
D. Lamarck
Ans. A
Explanation: The theory of origin of life on earth is proposed by Haldane was confirmed by the
experiments conducted by Stanley L. Miller and Harold C. Urey.
9. Which of the following are the postulates of Darwin’s theory of evolution?
A. Within any population, there is natural variation.
B. Even though all species produce a large number of offspring’s, populations remain fairly
constant naturally.
C. The struggle for survival within populations eliminates the unfit individuals.
D. All the above are correct
Ans D
Explanation: Darwin’s theory of evolution can be described as: within any population, there is
natural variation. Some individuals have more favourable variations than others. Even though all
species produce a large number of offspring’s, populations remain fairly constant naturally. The
struggle for survival within populations eliminates the unfit individuals. This is called natural
selection.
10. The process by which new species develop from the existing species is called:
A. Homologous
B. Analogous
C. Speciation
D. Genetic variation
Ans. C
Explanation: Speciation is the formation of new species.