Question
Set
8
DIAGRAM BASED QUESTIONS
(2, 3 or 4 marks)
Q. Sketch and label :
Chapter 1 : Reproduction in Lower and Higher Plants
(1) Sketch and label the diagram of ovule most commonly
seen in angiosperms. (July ’22)
Ans.
Fig. V. S. of anatropous ovule
(2) Sketch and label the T. S. of anther.
Ans.
Fig. T. S. of anther
147
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
(3) Sketch and label : Development of female gametophyte.
Ans.
Fig. Development of female gametophyte
(4) Name the figure given below. Identify label A and B.
Explain its development. (Sept. ’21)
Ans. This is a male gametophyte. A : Male gamete
B : Pollen
tube.
Development of male gametophyte :
(1) Microspore or pollen grain is first cell of male gametophyte.
(2) The protoplast of pollen grain divides mitotically to form
two unequal cells – a small thin walled generative cell and a large
naked vegetative or tube cell.
(3) The generative cell possesses thin cytroplasm and a nucleus.
It separates and floats in the cytoplasm of vegetative cell.
(4) The vegetative cell, possesses thick cytoplasm. irregular
shaped nucleus and the reserved food.
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QUESTION SET 8 : DIAGRAM BASED QUESTIONS
(5) In majority of the angiosperms, the pollen grains are liberated
at two-celled stage after the dehiscence of the anther.
(6) The generative cell of the pollen grain divides by mitosis to
form two male non-motile gametes.
Chapter 2 : Reproduction in Lower and Higher Animals
(1) Identify A, B, C, D, in the given diagram of human
reproductive system : (March ’22)
Ans. A : Testis, B : Vas deferens, C : Seminal vesicle, D : Prostate
gland.
(2) Identify labels A, B, C, D : (July ’22)
Ans. A : Primary oocyte,
D : Polar bodies.
B : Secondary oocyte,
C : Ovum,
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
(3) Give the name and functions of ‘A’ and
‘B’ from the given diagram.
Ans. (1) ‘A’ is acrosome.
Function of acrosome : Acrosome produces
lytic enzyme, hyalourinidase and thus helps in the
penetration of the egg during fertilization.
(2) ‘B’ is tail of the human sperm.
Function of tail : Tail lashes continuously and
helps the movement of the sperm in the female
genital tract.
(4) The diagram given below is that of a
intra-uterine contraceptive device. Study the
same and then answer the questions that
follows :
(i) Give
the
name
of
intra-uterine
contraceptive device shown in the diagram.
(ii) What is its mode of action ?
Ans. (i) The intra-uterine contraceptive device shown in the
diagram is Lippes loop.
(ii) It is a plastic double ‘S’ loop. It attracts the macrophages
stimulating them to accumulate in the uterine cavity. Macrophages
increase phagocytosis of sperms within the uterus and acts as a
contraceptive.
Chapter 3 : Inheritance and Variation
(1) Give the graphical representation of pleiotropy to show
inheritance of Sickle-cell anaemia.
Ans.
QUESTION SET 8 : DIAGRAM BASED QUESTIONS
151
(2) Identify labels ‘A’ of X chromosome : (Sept. ’21)
Ans. A : Centromere
(3) Sketch and label structure of X and Y chromosomes.
Ans.
Fig. Structure of X and Y chromosomes (in humans)
Chapter 4 : Molecular Basis of Inheritance
(1) The process of transcription takes place on a part of
DNA molecule known as transcription unit. Draw a well labelled
diagram of the same showing different regions of the unit.
(July ’22)
Ans.
Fig. Transcription Unit
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
(2) Draw a labelled diagram of Nucleosome with H1 Histone.
Ans.
Fig. Nucleosome
(3) Draw a labelled diagram showing semi-conservative
replication of DNA.
Ans.
(4) Identify the part labelled ‘A’ in the given diagram :
(1 mark) (July ’22)
Ans. A : Linker DNA.
QUESTION SET 8 : DIAGRAM BASED QUESTIONS
153
Chapter 5 : Origin and Evolution of Life
8
Identify the types of chromosomal aberrations in the
following figures A, B, C, D : (July ’22)
Ans. A : Deletion, B : Duplication, C : Inversion, D : Translocation.
8
Chapter 6 : Plant Water Relation
Draw neat and labelled diagram of zones of root.
Ans.
Fig. Root tip showing root hair zone
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
Chapter 8 : Respiration and Circulation
(1) Sketch and label human respiratory system.
Ans.
Fig. Human Respiratory System
(2) Sketch and label external structure of heart.
Ans.
Fig. Posterior (dorsal) view : External structure of human heart
QUESTION SET 8 : DIAGRAM BASED QUESTIONS
155
(3) Identify A and B in the given diagram and explain
T wave. (July ’22)
Ans. (1) A : P wave
B : RR interval
(2) T wave : (i) T wave is a small, wide and upwardly elevated
wave. (ii) T wave represents the ventricular repolarization.
(4) Give the name and function of ‘A’ and ‘B’ from the
diagram given below :
Fig. Larynx
Ans.
Name
Function
‘A’ – Epiglottis
Epiglottis prevents the entry of
food into trachea.
‘B’ – Tracheal cartilage
Tracheal
cartilage
prevents
collapse of trachea and always
keeps it open.
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
(5) Label parts ‘A’ and ‘B’ from the following diagram and
answer the following questions :
Fig. Exchange of gases between
alveolus and capillaries
(a) What is the partial pressure of O2 in part ‘B’ ?
(b) What is the partial pressure of CO2 in part ‘A’ ?
(c) How many alveoli are present in the lungs ?
Ans. Part A  Blood from pulmonary artery
Part B  Alveolus
(a) The partial pressure of O2 in alveolar air is 104 mm Hg.
(b) The partial pressure of CO2 in pulmonary capillaries is
45 mm Hg.
(c) There are about 700 million alveoli in the lungs.
(6) Label parts ‘A’ and ‘B’ from the given diagram and give
their functions.
Fig. Conducting systems of human heart
QUESTION SET 8 : DIAGRAM BASED QUESTIONS
157
Ans. Part A  Sinoatrial [SA] node.
Function : SA node acts as pacemaker of heart because it has
the power of generating a new wave of contraction and making the
pace of contraction.
Part B  Atrioventricular [AV] node.
Function : Atrioventricular [AV] node acts as pace-setter of
heart.
Chapter 9 : Control and Coordination
(1) Draw the neat labelled diagram of sagittal section or
L.S. of human brain.
Ans.
Fig. L. S. of human brain
(2) Complete the given figure for the formation of spinal
nerve and redraw with proper labels. (Sept. ’21)
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
Ans.
Fig. T. S. of spinal cord
(3) Answer the following questions. (July ’22)
(a) Sketch and label the diagram of brain to show ventricles
in coronal plane.
Ans.
Fig. Ventricles of brain
(b) Name the cavity which is continuation of IV ventricle.
(3 marks)
Ans. Cavity which is in continuation of IV ventricle is central canal.
(4) Sketch and label – V. S. of pituitary.
Ans.
Fig. V. S. of pituitary gland
QUESTION SET 8 : DIAGRAM BASED QUESTIONS
159
(5) Sketch and label – Morphology of thyroid.
Ans.
Fig. Morphology of thyroid gland
(6) Label the following diagram.
Ans. (A) Optic chiasma (B) Pons varolii (C) Olfactory bulb
(D) Cerebrum (E) Pituitary (F) Medulla oblongata (G) Cerebellum.
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
Chapter 10 : Human Health and Diseases
(1) Label the given diagram.
Fig. Structure of antibody
Ans. (a) Antigen binding site (b) Variable region of heavy chain
(c) Varible region of light chain (d) Constant region of light chain
(e) Constant region of heavy chain (f) Disulphide bond (g) Hinge
(h) Light chain (i) Heavy chain.
(2) Sketch and label the diagram of pathogen that causes
typhoid.
Ans. Pathogen of typhoid is Salmonella typhi.
Fig. Salmonella typhi
QUESTION SET 8 : DIAGRAM BASED QUESTIONS
161
(3) Sketch and label disease-causing agents of pneumonia.
Ans.
Fig. Pneumonia – Infectious agents
(4) Sketch and label structure of HIV.
Ans.
Fig. Structure of HIV
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
Chapter 11 : Enhancement of Food Production
(1) Draw a labelled diagram of Tubular tower fermenter.
Ans.
(2) Draw a labelled diagram of T.S. of root nodule.
Ans.
(3) a. Identify A, B and C in the given diagram.
b. Name the plant which has symbiotic relationship with ‘A’.
Ans. a. A : Anabaena, B : Photosynthetic zone, C : Dorsal lobe.
b. Azolla.
QUESTION SET 8 : DIAGRAM BASED QUESTIONS
163
Chapter 12 : Biotechnology
(1) Draw a labelled diagram of a plasmid showing ori, ampr
and a region into which foreign DNA can be inserted.
Ans.
(2) Draw a diagram showing steps in r-DNA technology.
Ans.
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
Chapter 13 : Organisms and Population
(1) Sketch and label the graph showing logistic growth curve
of the population.
Ans.
Fig. Logistic growth curve of population
(2) From the given diagram identify the type of population
growth curve : (March ’22)
Ans.
Fig. Exponential or geometric growth curve
QUESTION SET 8 : DIAGRAM BASED QUESTIONS
165
(3) The following diagram indicates which type of interaction ?
Write a note on the same.
Ans. (1) The diagram given above shows mutualism.
(2) Mutualism : (1) Mutualism
is
an
obligatory
and
interdependent interaction. It is an association of two species in
which both of them are benefited.
(2) The classic example of mutualism is lichens. Lichen is an
intimate, mutualistic relationship between a fungus and
photosynthetic algae or cyanobacteria.
(3) Most of the plant and animal interactions are of mutualistic
type.
(4) For pollination and seed dispersal, plants depend on the
animals.
(5) Animals in turn feed on pollen and nectar during pollination.
During seed dispersal juicy and nutritious fruits are used by the
animals.
(6) In animal-animal interactions also mutualism is seen in
many instances.
(4) Sketch the representation of Age Pyramid.
Ans.
Fig. Representation of age pyramid for human population
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
Chapter 14 : Ecosystems and Energy Flow
● Identify A, B, C, D and E given in sketch of carbon cycle :
Ans. A : Combustion B : Respiration by plants
C : Respiration by animals
D : Photosynthesis E : Decomposition.
Chapter 15 : Biodiversity, Conservation and Environmental Issues
● Observe the given diagram and answer the questions given
below :
(a) What is the name of this equipment?
(b) What is the function of such equipment?
(c) Explain its working in brief.
QUESTION SET 8 : DIAGRAM BASED QUESTIONS
167
Ans.
(a) Exhaust gas scrubber.
(b) Exhaust gas scrubbers are used to clean air by removing
both dust and gases.
(c) The exhaust is passed through dry or wet packing material.
When it is done, gases like SO2 are removed. For this purpose, the
exhaust is passed through a spray of water or lime.
Question
Set
9
CHART BASED/TABLE BASED
QUESTIONS
(2 or 3 marks)
Chapter 1 : Reproduction in Lower and Higher Plants
(1) Complete the following chart :
Outer layer
Composed of
Inner layer
Composed of
Exine
Outer layer
Composed of
Sporopollenin
Intine
Inner layer
Composed of
Cellulose,
Pectin
Sporoderm
Ans.
Sporoderm
(2) Complete the following chart :
Wall of Mature Anther
Outer layer
Layer of
thin walled
cells
Layer with
fibrous
thickening
Function
Function
168
Innermost
Layer
QUESTION SET 9 : CHART BASED/TABLE BASED QUESTIONS
169
Ans.
Wall of Mature Anther
Epidermis
Outer Layer
Function
Endothecium
Layer with
fibrous
thickening
Tapetum
Middle Layer
Layer of
thin walled
cells
Protection
Innermost
Layer
Function
Nutrition
(3) Complete the table – related to outbreeding devices.
Type
Description
Example
1.
Unisexual flowers/Monoecious or Papaya,
dioecious plants
Maize
2.
Mechanical device to prevent SelfPollination –
Natural physical barrier
3. Prepotency
Apple
4. Heteromorphy
Primula
5. Protandry
Androecium matures earlier than
gynoecium
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
Ans.
Type
Description
Example
1. Unisexuality
Unisexual flowers / Monoecious or Papaya,
dioecious plants
Maize
2. Herkogamy
Mechanical device to prevent Self- Calotropis
Pollination –
Natural physical barrier
3. Prepotency
Pollens of other flower germinate Apple
rapidly rather than from same
4. Heteromorphy Presence of different forms of Primula
flowers with respect to stigma
and anthers
Androecium matures earlier than Sunflower
gynoecium
disc florets
5. Protandry
Chapter 2 : Reproduction in Lower and Higher Animals
(1) Complete the following chart and rewrite :
Sr.
Female Reproductive
Homology to Male
No.
Organs
Reproductive Organs
1.
Labia majora
2.
3.
Bulbourethral glands/
Cowper’s gland
Clitoris
Ans.
Sr.
No.
Female Reproductive
Organs
Homology to Male
Reproductive Organs
1.
Labia majora
Scrotum
2.
Bartholin’s gland /
Vestibular gland
Bulbourethral glands/
Cowper’s gland
3.
Clitoris
Penis
QUESTION SET 9 : CHART BASED/TABLE BASED QUESTIONS
171
(2) Complete the following chart and rewrite :
Sr.
No.
1.
Hormones
Testosterone
2.
3.
Functions
Stimulates uterine contractions during
parturition
Progesterone
Ans.
Sr.
No.
Hormones
Functions
1.
Testosterone
Stimulates spermatogenesis
2.
Oxytocin
Stimulates uterine contractions during
parturition
3.
Progesterone
Maintain endometrium of uterus during
secretory phase and gestation
Chapter 3 : Inheritance and Variation
Observe the given pedigree chart and answer the following
questions :
(a) Identify whether the trait is sex-linked or autosomal.
(b) Give an example of a trait in human beings which shows
such a pattern of inheritance.
Ans. Pedigree given above shows :
l
First Generation : Carrier woman marrying a sufferer man.
Their three children are in following birth order.
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
Second generation : First son is normal, second daughter is
carrier and third daughter is sufferer.
l Third generation : The sufferer daughter marries a normal
man. Her children are normal daughter and sufferer son.
(a) The above pedigree show sex-linked (X-linked) trait. Since
criss-cross inheritance is seen in the trait, it must be sex-linked
inheritance.
(b) Such trait and its inheritance can be seen in colour blindness.
l
Chapter 4 : Molecular Basis of Inheritance
Guess (i) the possible locations of DNA on the collected
evidence from a crime scene and (ii) the possible sources of
DNA.
Evidence
Possible location
of DNA on the
evidence
e.g. Eyeglasses
e.g. Earpieces
Bottle, Can, Glass
Sides, mouthpiece
Handle
Used cigarette
Sources of DNA
e.g. Sweat, Skin
Sweat, skin, blood
Cigarette butt
Bite mark
Saliva
Surface area
Hair, semen, sweat,
urine
Ans.
Evidence
Possible location
of DNA on the
evidence
Sources of DNA
e.g. Eyeglasses
e.g. Earpieces
e.g. Sweat, Skin
Bottle, Can, Glass
Sides, mouthpiece
Saliva
Door
Handle
Sweat, skin, blood
Used cigarette
Cigarette butt
Saliva
Bite mark
Teeth impression
Saliva
Clothes
Surface area
Hair, semen, sweat,
urine
QUESTION SET 9 : CHART BASED/TABLE BASED QUESTIONS
173
Chapter 7 : Plant Growth and Mineral Nutrition
(1) Complete the table of growth hormones.
Chemical
Substance
Category
(1) NAA
(2) GA3
Effect
Example
Flowering
induced
Gibberellins
(3) Kinetin
Tomato, apple,
pear
Callus
proliferation
(4) ABA
Abscissic acid
Induce
bud
dormancy
Category
Effect
Ans.
Chemical
Substance
Example
(1) NAA
Auxins
Flowering
induced
Pineapple/
Litchi
(2) GA3
Gibberellins
Causes
parthenocarpy
Tomato, apple,
pear
(3) Kinetin
Cytokinin
Callus
proliferation
Tobacco
(4) ABA
Abscissic acid
Induce
Acer
dormancy
bud
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
(2) Pick up the right options and complete the chart given
below and rewrite : (Sept. ’21)
Sr.
No.
Hormone
1.
Example
IAA
2.
Auxin
3.
Stress hormone
4.
cell elongation
IBA
delay cell division
Zeatin
5.
Abscissic acid
6.
Auxin
Function
Cell division
ABA
Flowering in Pineapple
Options : Antitranspirant,
Ethylene,
Auxin,
ABA,
Apical
dominance, Gibberellins, Cytokinin, NAA.
Ans.
Sr.
No.
Hormone
1.
Auxin
2.
Auxin
3.
Stress hormone
4.
Cytokinin
5.
Abscissic acid
6.
Auxin
Example
IAA
Function
cell elongation
Apical
dominance
IBA
ABA
Zeatin
ABA
delay cell division
Cell division
Antitranspirant
NAA
Flowering in Pineapple
QUESTION SET 9 : CHART BASED/TABLE BASED QUESTIONS
175
Chapter 8 : Respiration and Circulation
(1) Complete
the
following
flow
diagram
of
double
circulation : (March ’22)
Ans.
(2) Observe the above diagrammatic representation of double
circulation and answer the given questions :
1. Why the circulation shown in the above diagram is called
double circulation?
2. What are the two main routes of double circulation?
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
3. Which blood vessels carry oxygented blood to heart and
deoxygenated blood to lungs?
4. Which blood vessels carry deoxygented blood to heart and
oxygenated blood to body organs?
Ans. 1. During circulation, blood passes twice through the
heart, therefore it is called double circulation.
2. (i) Pulmonary circulation which is from heart to lungs and
back from lungs to heart.
(ii) Systemic circulation which is from heart to body and
back from all body organs to the heart.
3. Oxygenated blood is carried to the heart by pulmonary veins.
Dexoygenated blood is carried to the lungs by pulmonary artery.
4. Deoxygenated blood is carried to heart by superior and
inferior vena cavae. Oxygenated blood is carried to the body organs
by systemic or dorsal aorta.
(3) Complete the following table :
Organism
1. Insects
Habitat
Respiratory
surface/organ
Terrestrial
2. Amphibian tadpoles of frog,
salamanders
3. Fish
Aquatic
4. Reptiles, Birds and Mammals
Ans.
Organism
1. Insects
Habitat
Terrestrial
Respiratory
surface/organ
Tracheal tubes
and spiracles
2. Amphibian tadpoles of frog, Aquatic
salamanders
External gills
3. Fish
Aquatic
Internal gills
4. Reptiles, Birds and Mammals
Terrestrial
Lungs
QUESTION SET 9 : CHART BASED/TABLE BASED QUESTIONS
177
(4) Complete the following table :
Waves on ECG
Heart Activity
Caused due to
Atrial contraction
P wave
Ventricular
QRS wave
depolarization
Ventricular
repolarization
T wave
Ans.
Waves on ECG
Heart Activity
Caused due to
P wave
Atrial contraction
Atrial depolarization
QRS wave
Ventricular
contraction
Ventricular
depolarization
Ventricular
Ventricular
contraction
repolarization
T wave
(5) Complete the following chart :
Extrinsic
pathway
Intrinsic
pathway
Inactive factor X
Tissue
Cascade of clotting
Thromboplastin
factors
Blood clot
7 / 21 M. L. Q. Sets : Biology – Std. XII D0215 (2023)
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
Ans.
Extrinsic
pathway
Intrinsic
pathway
Inactive factor X
Tissue
Thromboplastin
Cascade of clotting
factors
Activated factor X
Prothrombin
Thrombin
Fibrinogen
Fibrin
Blood clot
Chapter 10 : Human Health and Diseases
(1) Fill in the blanks and redraw the chart : (Sept. ’21)
Sr.
No.
Blood
group
Genotype
1.
Antigen on
surface of RBC
A
2.
Antibody in
serum
Antibody b
BB or BO
Antibody a
Nil
3.
AB
AB
4.
O
OO
Nil
Ans.
Sr.
No.
Blood
group
Genotype
Antigen on
surface of RBC
Antibody in
serum
1.
A
AA or AO
A
Antibody b
2.
B
BB or BO
B
Antibody a
3.
AB
AB
A and B
Nil
4.
O
OO
Nil
Antibody
A and B
QUESTION SET 9 : CHART BASED/TABLE BASED QUESTIONS
179
(2) Complete the following chart and rewrite : (July ’22)
Blood
group
A
Antigen on
surface of RBC
Genotype
Antibody in
serum
AA or AO
BB or BO
AB
OO
B
a
A and B
Nil
Nil
Ans. For the answer, refer to previous questions.
(3) Complete the following table :
Type
Opioids
Cannabinoids
Cocaine
Source
Hallucinogens
Atropa
bellodona and
Datura
Example
Cocaine
Ans.
Type
Source
Opioids
Cannabinoids
Cocaine
Hallucinogens
Papaver
Cannabis
Erythroxylum Atropa
somni-
sativa
coca
ferum
Example Heroin,
smack
bellodona and
Datura
Marijuana,
hashish,
charas and
ganja
Cocaine
LSD
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
(4) Complete the following table :
Carcinogen
Organ affected
N-nitrosodimethlene
Aflatoxin
Vagina
Urinary bladder
Prostate
Skin and lungs
Ans.
Carcinogen
Organ affected
N-nitrosodimethlene
Lungs
Aflatoxin
Liver
Diethylstilboestrol
Vagina
2-naphthylamine and
Urinary bladder
4-aminobiphenyl
Cadmium oxide
Prostate
Soot, coal tar (2-4 benzopyrene)
Skin and lungs
Chapter 11 : Enhancement of Food Production
(1) What are A, B, C, D in the table given below :
Types of microbe
Name
Commercial Product
Fungus
A
Bacterium
Acetobacter aceti
B
C
Aspergillus niger
Citric acid
Yeast
D
Ethanol
Penicillin
QUESTION SET 9 : CHART BASED/TABLE BASED QUESTIONS
181
Ans. A : Penicillium chrysogenum
B : Vinegar (Acetic acid)
C : Fungus
D : Sachharomyces cerevisiae var. ellipsoidis
(2) Make a tabulation to show microbial pesticides and their
respective hosts.
Ans. Microbial pesticides and their host :
Microbial pesticide
Viruses :
Nucleopolyhedrovirus (NPV)
Host
Caterpillars, Gypsy moth, ants,
wasps, beetles
Granulovirus (GV)
Bacteria :
Caterpillars,
Bacillus thuringiensis (Bt)
cabbage worms, adult beetle
B. lentimorbus
B. papilliae
Fungi :
Beavueria bassiana
Aphid crocci,
A. unguiculata, mealy bugs,
Entomorphtora pallidaroseum
mites, white flies
Zoopthora radicans
Protozoans :
Grasshoppers,
Nosema locustae
caterpillars, crickets
Chapter 12 : Biotechnology
(1) Complete the following table :
RE
Source
Alu I
Blunt ends
Bacillus amyloliquefaciens H
Eco R I
Hind II
End products
Sticky ends
Sticky ends
H. influenza Rd
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NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
Ans.
RE
Source
End products
Alu I
Arthobacter luteus
Blunt ends
Bam H I
Bacillus amyloliquefaciens H
Sticky ends
Eco R I
E. coli Ry 13
Sticky ends
Hind II
H. influenza Rd
Blunt ends
(2) Classify the given proteins produced by r-DNA technology
to treat various diseases in human and rewrite as shown in the
table : (July ’22)
Disorders/Diseases/
Health conditions
Atherosclerosis
Recombinant Protein (s)
Platelet derived growth factor
Anaemia
Parturition
Blood clots
Diabetes
Haemophilia A
Haemophilia B
Factor VIII, Insulin, Relaxin, Factor IX, Erythropoietin, Tissue
Plasminogen Activator (TPA)
Ans.
Disorders/Diseases/
Health conditions
Recombinant Protein (s)
Atherosclerosis
Platelet derived growth factor
Anaemia
Erythropoietin
Parturition
Relaxin
Blood clots
Tissue Plasminogen Activator (TPA)
Diabetes
Insulin
Haemophilia A
Factor VIII
Haemophilia B
Factor IX
QUESTION SET 9 : CHART BASED/TABLE BASED QUESTIONS
183
(3) Fill in the blanks and complete the chart.
GMO
Purpose
(i) Bt cotton
Delay the softening of tomato during
ripening
(ii)
(iii) Golden rice
(iv) Holstein cow
Ans.
GMO
Purpose
Insect resistance
(i) Bt cotton
(ii) Flavr savr Tomato
Delay the softening of tomato during
ripening
(iii) Golden rice
Rich in vitamin A
(iv) Holstein cow
High milk productivity
(4) Complete the following table :
Substance
Potential
benefit
Crop
Provitamin A Anti-oxidant
Transgene
Phytoene
synthase,
Lycopene cyclase
Fructans
Sugarbeet
Vitamin E
Canola
 -tocopherol
methyl
transferase
Flavonoids
Anti-oxident
Tomato
Iron
fortification
Rice
Ferritin, metallothioein,
phytase
184
NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
Ans.
Substance
Potential
benefit
Provitamin A Anti-oxidant
Crop
Rice
Transgene
Phytoene
synthase,
Lycopene cyclase
Fructans
Low calories Sugarbeet I – sucrose : sucrose
fructosyl transferase
Vitamin E
Anti-oxidant Canola
 -tocopherol methyl
transferase
Flavonoids
Anti-oxident
Tomato
Chalone isomerase
Iron
Iron
fortification
Rice
Ferritin, metallothioein,
phytase
8
Chapter 13 : Organisms and Population
Complete the following table by placing the categories
and the given
0 : Not affected
Sr.
No.
signs
 : Benefited
;
Interactions
1.
Neutralism –
2.
Negative interactions
3.
Positive interactions
4.
Both positive and negative interactions
 : Inhibited
;
Species
A
B
QUESTION SET 9 : CHART BASED/TABLE BASED QUESTIONS
185
Ans.
Sr.
No.
Species
Interactions
1.
Neutralism – no significant effect
2.
Negative interactions
a. Competition – direct interference type
b. Competition – resource – use type
c. Amemsalism
3.
O
O




O



O






Both positive and negative interactions
a. Parasitism
b. Predation
8
B

Positive interactions
a. Symbiosis (Mutualism)
b. Commensalism
c. Protocooperation
4.
A
Chapter 14 : Ecosystems and Energy Flow
Select and write one suitable example for each of the
following :
Seral stages
Xerarch
Hydrarch
Pioneers
Intermediate Stages
Climax Community
(Forest, Trees, Lichens, Hydrilla, Phytoplanktons, Grasses)
Ans.
Seral stages
Xerarch
Hydrarch
Pioneers
Lichens
Phytoplanktons
Intermediate Stages
Grasses
Hydrilla
Climax Community
Trees
Forest
186
NAVNEET 21 M. L. Q. SETS : BIOLOGY – STD. XII
8
Chapter 15 : Biodiversity, Conservation and Environmental Issues
Complete the flow chart : (Answers directly given in bold.)
Ans.