BASIC SCIENCE
THIRD TERM EXAMINATION
JUNIOR SECONDARY SCHOOL (JSS 1)
SECTION A
Answer all questions.
1 The union of male and female sex cells is called ____________.
(a) gamete
(b) zygote
(c) cell
(d) embryo
1. ____________ is a part of the mammalian eye where image is formed.
(a) Retina
(b) Optic nerve
(c) Pupil
(d) Ciliaya muscle
2. The chemical symbol for potassium is ____________.
(a) K
(b) Na
(c) H
(d) P
3. All are separation techniques except ____________.
(a) evaporation
(b) sublimation
(c) centrifuge
(d) titration
4. The solar system comprises of ____________.
(a) Sun, planets
(b) sun, metalloid
(c) stars, moon
(d) sun, earth
5. ____________ is the power house of a cell.
(a) Mitochondrion
(b) Nucleus
(c) Chloroplast
(d) Ribosome
6. Which of the following animals is a mammal?
(a) Fish
(b) Whale
(c) Bird
(d) Lizard
7. The unit of energy is called ____________.
(a) Newton
(b) Joule
(c) Watt
(d) Ohms
8. The end product of carbohydrate digestion is ____________.
(a) glucose
(b) maltose
(c) fatty acid and glycerol
(d) Amino acid
9. Which of these is an example of water borne diseases?
(a) Small pox
(b) Chicken pox
(c) Typhoid fever
(d) measles
10. The atomic number of Boron is ____________.
(a) 3
(b) 4
(c) 5
(d) 6
11. All are elements of weather except ____________.
(a) temperature
(b) rainfall
(c) humidity
(d) wave
12. Load stone magnet is ____________ magnet.
(a) impure
(b) natural occurring
(c) fire
(d) temporary
13. Which of the following is a second class lever?
(a) Scissors
(b) Pliers
(c) Crowbar
(d) Bottle opener
14. The temperature at which liquid turns to solid is called ____________ point.
(a) cooling
(b) freezing
(c) boiling
(d) melting
15. The carriers of micro organisms that cause diseases are called ____________.
(a) antibodies
(b) germs
(c) vectors
(d) carrier
16. Astronauts in space have one major problem which is ____________.
(a) weather
(b) heaviness
(c) communication
(d) weightlessness
17. The followings are major types of resources from plants except ____________.
(a) food crops
(b) textile materials
(c) wood crops
(d) hide and skin
18. ____________ is a method of heat transfer.
(a) Evaporation
(b) Conduction
(c) Insulation
(d) Distillation
19. The symbol of resistor is ____________.
20. How much work is done when a force of 200N is applied by car over a distance of 6m?
(a) 1200N
(b) 1200j
(c) 1200m/s2
(d) 1200N/M
21. A sound heard after the reflection of the sound wave is called ____________.
(a) echo
(b) pitch
(c) noise
(d) music
22. These are fossil fuels except ____________.
(a) cooking gas
(b) candle wax
(c) bitumen
(d) kerosene
23. ____________ is not a water pollutant.
(a) CO2
(b) oil
(c) sewage
(d) gammaline
24. Another name for red blood cell is ____________.
(a) erythrocyte
(b) leucocyte
(c) thromcyte
(d) luccocyte
25. Chlorination can be defined as the addition of ____________ to eater to kill germs.
(a) Alum
(b) Cl
(c) Mg
(d) Iron
26. The energy conversion that takes place when you rub a palm together is ____________ energy.
(a) mechanical/sound
(b) mechanical/chemical
(c) heat to sound
(d) mechanical/heat
27. The radiation used to examine soft body tissue is ____________ ray.
(a) ᵝ
(b) ᵧ
(c) ᵪ
(d)
28. The soil type mostly rich in nutrients is ____________.
(a) clay
(b) gravel
(c) loamy
(d) sandy
29. Style, stigma and ovary of a flower are referred to as ____________.
(a) carpel
(b) stamen
(c) petal
(d) sepal
30. The tiny membrane which covers the vaginal opening is called ____________.
(a) velva
(b) hymen
(c) mon pubic
(d) clitoris
31. The pigment which gives plants the green colour is ____________.
(a) chrolophyll
(b) chloroplast
(c) chloroform
(d) chromoplast
32. These are field forces except ____________ force.
(a) electric
(b) frictional
(c) gravitational
(d) magnetic
33. The bones-like structure found in the middle ear are called ____________.
(a) blades
(b) ear bone
(c) ossicle
(d) pinna
34. A pregnant woman will develop goitre if she lacks ____________ in her diet.
(a) calcium
(b) iron
(c) phosphorous
(d) iodine
35. One major difference between plants and animals is ____________.
(a) movement
(b) excretion
(c) reproduction
(d) respiration
36. The genotype “Tt” shows that ____________.
(a) shortness dominate tallness
(b) tallness is partially recessive
(c) shortness is partially dominant
(d) tallness dominates shortness
37. The parts of the body that are responsible for movement are ____________, ____________ and
joint.
(a) bone, muscle
(b) bone, cartilage
(c) cartilage,muscle
(d) skeleton.cartilage
38. The quantity of H2O in the atmosphere is termed ____________.
(a) air pressure
(b) humidity
(c) visibility
(d) rainfall
39. The vector for sleeping sickness is ____________.
(a) housefly
(b) blackfly
(c) tee-tse fly
(d) mosquito
40. All are excretory products except ____________.
(a) sweat
(b) urine
(c) carbon (iv) oxide
(d) faeces
41. Limestone is used to make the following except ____________.
(a) concrete
(b) glass
(c) water pipes
(d) quick lime
42. Pulse taking is a medical procedure in determining proper functioning of the ____________.
(a) heart
(b) kidney
(c) lungs
(d) liver
43. The outer ear is called ____________.
(a) eardrum
(b) auditory meatus
(c) pinna
(d) canal
44. The function of lipase is to digest ____________.
(a) starch
(b) proteins
(c) fats
(d) vitamins
45. Which of the following blood group is a universal donor?
(a) AB
(b) O
(c) A
(d) B
46. ____________ Brown discovered Brownian motion.
(a) Robbin
(b) Rowland
(c) Rugged man
(d) Robert
47. Matters could be in form of atoms, molecules and ____________.
(a) iron
(b) ion
(c) lion
(d) fays
48. Less than ____________ % of all the earth’s water is available as fresh water.
(a) 1
(b) 2
(c) 3
(d) 4
49. Dry air contains ____________ % of nitrogen.
(a) 21
(b) 78
(c) 7.8
(d) 2.1