Multiple Choice Questions

How do Organisms Reproduce?

Updated for CBSE 2027
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138+ Practice Questions
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Total 138 questions available

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Q. 1
What is the surgical method of contraception used in human males?
A
Tubectomy
B
Vasectomy
C
Condoms
D
Contraceptive pills
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Q. 2
Fertilisation results immediately in the formation of?
A
a placenta
B
an embryo
C
a foetus
D
a zygote
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Q. 3
Which of the following is the correct sequence of events of sexual reproduction in a flower?
A
Pollination, fertilisation, embryo, seedling
B
Embryo, seedling, pollination, fertilisation
C
Pollination, fertilisation, seedling, embryo
D
Seedling, embryo, fertilisation, pollination
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Q. 4
What role does the rapidity of asexual reproduction play in ecosystems?
A
It promotes genetic variation.
B
It allows organisms to compete more effectively.
C
It hinders population growth.
D
It requires more resources.
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Q. 5
How many parents are involved in the process of sexual reproduction?
A
One male parent
B
One female parent
C
One parent of any gender
D
One male and one female parent
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Q. 6
Copper T and Loops are
A
Contaminating devices
B
Conducive devices
C
Contraceptive devices
D
Conventional devices
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Q. 7
Which of the following is the correct sequence regarding sexual reproduction in a flowering plant?
A
Pollination, fertilisation, embryo, seedling
B
Pollination, fertilisation, seedling, embryo
C
Embryo, seedling, pollination, fertilisation
D
Seedling, embryo, fertilisation, pollination
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Q. 8
A feature of reproduction that is common to Amoeba, Spirogyra and yeast is that:
A
they reproduce only sexually.
B
they are all multicellular.
C
they reproduce asexually.
D
they are all unicellular.
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Q. 9
Which of the following is found in men?
A
Placenta
B
Vas deferens
C
Fallopian tube
D
Ovum
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Q. 10
Which of the statements is incorrect?
A
The secondary nuclei form a polar nucleus prior to fertilisation.
B
Androecium is a part of the carpel.
C
All of the above
D
The filiform apparatus blocks the entry of pollen and sperm cells.
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Q. 11
What is the term for the period during adolescence when reproductive tissues begin to mature?
A
Puberty.
B
Adulthood.
C
Germination.
D
Reproduction
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Q. 12
The place where fertilization take place in the human body is
A
vagina
B
Uterus
C
Oviduct
D
Ovary
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Q. 13
Where are sperms formed in the human body?
A
Testis
B
Prostate gland
C
Vas deferens
D
Ovary
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Q. 14
Male reproductive organ in flowering plant is
A
Ovary
B
Carpel
C
Stamen
D
Corolla
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Q. 15
The specific reproductive part in Rhizopus responsible for reproduction is:
A
sporadic
B
sporangia
C
hyphae
D
stick
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Q. 16
The movement of sperm is due to the ____ present in them.
A
glucose
B
all of these
C
sucrose
D
fructose
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Q. 17
What is the disadvantage of parthenogenesis?
A
Lack of adaptability
B
Retention of genotype
C
Variety in population
D
Wastage of germplasm
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Q. 18
Which of the following sterilisation methods is permanent?
A
Vasectomy
B
Tubal Sterilisation
C
IUD
D
Both (a) and (b)
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Q. 19
In human males, the testes lie in the scrotum, because it helps in the:
A
formation of sperm
B
gametes (d)
C
process of mating
D
easy transfer of gametes
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Q. 20
What advantage does asexual reproduction offer over sexual reproduction?
A
Greater genetic diversity
B
Involvement of two genders
C
Slower reproductive rate
D
Rapid reproduction without mating.
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Q. 21
Fertiization will not take place if -
A
the vas deferens in the male is blocked
B
the fallopian tube in the female is blocked
C
both (A) and (B)
D
none of the above
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Q. 22
Which of the following does not happen in asexual reproduction?
A
Fertilization
B
Budding
C
Multiple fission
D
Binary fission
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Q. 23
Which of the following statements describes a characteristic of asexual reproduction?
A
Offspring arise from the fusion of gametes.
B
Offspring arise from a single organism.
C
Both males and females are required for reproduction.
D
Offspring inherit genetic material from two parents.
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Q. 24
Hydra and Planaria can be cut into any number of pieces and each piece grows into a complete organism. This is known as:
A
regeneration
B
fragmentation
C
budding
D
speciation
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Q. 25
How does the mechanism and process of reproduction vary among species?
A
All species reproduce through the same method
B
Mechanisms and processes vary across different species
C
Mechanisms are the same, but processes differ
D
Only plants exhibit reproductive processes
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Q. 26
Which organisms can undergo asexual reproduction?
A
Only prokaryotes
B
Only animals
C
Both plants and fungi.
D
Only eukaryotes
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Q. 27
Why are pollens spiny?
A
Help in Fertilization
B
For easy pollination
C
To attach to bodies of insects
D
Appearance
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Q. 28
A feature of reproduction that is common to Amoeba, Spirogyra and Yeast are that
A
they reproduce asexually.
B
they reproduce only sexually.
C
they are all multicellular.
D
they are all unicellular.
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Q. 29
Which of the following diseases is transmitted sexually?
A
Syphilis
B
Elephantiasis
C
Jaundice
D
Sleeping sickness
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Q. 30
Variation patterns are studied in the offspring of sexually and asexually reproducing organisms. State your observation:
A
Cannot be determined.
B
No difference in variation is observed in offspring ofsexually and asexually reproducing organisms.
C
More variations are observed in the offspring of asexually reproducing organisms.
D
More variations are observed in the offspring of sexually reproducing organisms.
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Q. 31
Offspring formed by asexual reproduction have greater similarity among themselves because:
(i) Asexual reproduction involves only one parent.
(ii) Asexual reproduction does not involve gametes.
(iii) Asexual reproduction occurs before sexual reproduction.
(iv) Asexual reproduction occurs after sexual reproduction.
A
(iii) and (iv)
B
(ii) and (iv)
C
(i) and (iii)
D
(i) and (ii)
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Q. 32
In amoeba the splitting of the two cells during division can take place in ________ plane.
A
perpendicular
B
single
C
any
D
directional
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Q. 33
Tissue culture technique is used for
A
rapid multiplication of plant
B
multiplication of sterile plants
C
growing disease free plant
D
all of these.
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Q. 34
The correct sequence of organs in the male reproductive system for transport of sperms is:
A
testis → ureter → urethra
B
testis → urethra → ureter
C
testis → vas deferens → ureter
D
testis → vas deferens → urethra
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Q. 35
Which of the following statements is NOT true regarding asexual reproduction in plants?
A
Plants that reproduce asexually have greater genetic diversity than those who reproduce sexually.
B
Plants that reproduce asexually are more stable than those who reproduce sexually.
C
Plants that reproduce asexually create offspring that are identical to the parent plant.
D
Plants that reproduce asexually reach maturity faster than those who reproduce sexually.
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Q. 36
Length of pollen tube depends on the distance between
A
pollen grain on upper surface of stigma and ovule
B
upper surface of stigma and lower part of style
C
pollen grain and upper surface of stigma
D
pollen grain in anther and upper surface of stigma
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Q. 37
A fertilized ovule develops into a _____ in an angiosperm plant.
A
cotyledon
B
seed
C
fruit
D
flower
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Q. 38
What is a characteristic feature of sexual reproduction concerning genetic diversity?
A
Offspring have identical genetic makeup to their parents.
B
Offspring exhibit less variation due to limited genetic material.
C
Offspring inherit traits from only one parent.
D
Offspring have a mix of genetic material from both parents, leading to increased variation.
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Q. 39
The development of fruit after fertilization occurs from:
A
ovary
B
style
C
androecium
D
stigma
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Q. 40
Buds produced in the notches along the leaf margin of Bryophyllum fall on the soil and develop into new plants. This is an example of:
A
vegetation
B
clone formation
C
sexual reproduction
D
vegetative propagation
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Q. 41
Vegetative propagation refers to the formation of new plants from the following existing organs of the old plants:
A
stems, roots and flowers
B
stems, leaves and flowers
C
stems, flowers and fruits
D
stems, roots and leaves
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Q. 42
In sexual reproduction, which gender typically gives birth to new individuals?
A
Males
B
Females.
C
Both males and females
D
Neither males nor females
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Q. 43
What happens to the zygote in sexual reproduction?
A
It remains dormant.
B
It undergoes fragmentation.
C
It multiplies repeatedly and undergoes specific changes
D
It forms spores.
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Q. 44
What contributes to the variations in populations of organisms?
A
DNA copying is error-free.
B
DNA copying is not error-free.
C
Protein formation.
D
Involvement of only one parent.
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Q. 45
The method commonly used to produce new rose plants is
A
grafting
B
cutting
C
tissue culture
D
layering
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Q. 46
Which of the following is a product of meiosis?
A
Microspore mother cell
B
Endosperm nucleus (primary)
C
Megaspore mother cell
D
Megaspore
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Q. 47
Which structure in a plant is the male reproductive part producing yellowish pollen grains?
A
Petal.
B
Stamen.
C
Pistil.
D
Carpel.
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Q. 48
A feature of reproduction that is common to Amoeba, Yeast and Bacterium is that :
A
they reproduce only sexually
B
they reproduce asexually
C
they are all unicellular
D
they are all multicellular
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Q. 49
The male human reproductive system consists of the testes and the male accessory glands. Which of the following statements about male accessory glands is false?
A
The prostate gland also synthesises sperm.
B
The prostate gland and seminal vesicles are found outside the testes.
C
The secretions of prostate gland and seminal vesicles make semen fluid and provide nutrition.
D
Male accessory glands contribute to semen.
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Q. 50
Where are the reproductive parts of angiosperms located?
A
Flower.
B
Pistil.
C
Stigma.
D
Fruit.
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Q. 51
Which among the following diseases is not sexually transmitted ?
A
Gonorrhoea
B
Hepatitis
C
Syphilis
D
HIV-AIDS
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Q. 52
In a flower, the parts that produce male and female gametes (germ cells) are:
A
stamen and style
B
anther and ovary
C
filament and stigma
D
stamen and anther
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Q. 53
Which among the following does not reproduce by spore formation?
A
Penicillium fungus
B
Rhizopus fungus
C
Yeast fungus
D
Mucor fungus
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Q. 54
In humans, gestation is completed in -
A
120 weeks
B
240 days.
C
60 weeks
D
40 weeks
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Q. 55
What is another term used to describe organisms that produce both male and female gametes?
A
Unisexual
B
Asexual
C
Hermaphrodite
D
Bisexual
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Q. 56
The offspring formed by sexual reproduction exhibit more variations because _________ .
A
sexual reproduction is a lengthy process
B
genetic material comes from two parents of the same species.
C
genetic material comes from two parents of different species
D
genetic material comes only from one parent
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Q. 57
Eggs starts developing in human female
A
Only after her birth
B
When she attains puberty
C
When she is in her mother’s womb
D
After the first menstruation
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Q. 58
Which among the following statements are true for unisexual flowers?
(i) They possess both stamen and pistil.
(ii) They possess either stamen or pistil.
(iii) They exhibit cross pollination.
(iv) Unisexual flowers possessing only stamens cannot produce fruits.
A
(iii) and (iv)
B
(i), (iii) and (iv)
C
(i) and (iv)
D
(ii), (iii) and (iv)
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Q. 59
In Rhizopus, tubular thread like structures bearing sporangia at their tips are called :
A
Rhizoids
B
Roots
C
Filaments
D
Hyphae
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Q. 60
Asexual reproduction takes place through budding in:
A
Leishmania
B
Yeast
C
Amoeba
D
Plasmodium
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Q. 61
Reproduction is essential for living organisms to order to
A
maintain growth.
B
continue the species generation after generation.
C
fulfill their energy requirement.
D
keep the individual organism alive.
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Q. 62
The ability to give rise to new individual organisms from their body parts.
A
Fission
B
Regeneration
C
Reproduction
D
Fragmentation
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Q. 63
Which of the following statement is not true about reproduction?
A
Cell division in unicellular organisms is the method of reproduction.
B
Creation of a DNA copy is a basic event in reproduction.
C
Organisms create exact copies of themselves.
D
Simply breaking up into smaller pieces upon maturation is also a method of reproduction.
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Q. 64
Where does fertilization occur in human females?
A
Cervix
B
Vagina
C
Uterus
D
Oviduct
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Q. 65
The ability of a cell to divide into several cells during reproduction in Plasmodium is called :
A
Budding
B
Reduction division
C
Multiple fission
D
Binary fission
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Q. 66
A ___ fuses with a ___ in generative fertilisation.
A
Secondary nucleus, polar nucleus
B
Polar nucleus, female gamete
C
Male gamete, female gamete
D
All of the above
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Q. 67
What happens when a Planarian (plural-Planaria) is cut into many fragments?
A
Nearly half of the fragments regenerate into new organisms.
B
Only the head containing fragment regenerates into a new organism.
C
All fragments regenerate into new organisms.
D
No changes are seen in fragments. Planaria reproduce by budding.
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Q. 68
The place where fertilization take place in the human body is-
A
Uterus
B
Ovary
C
vagina
D
Oviduct
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Q. 69
Which of the following layers of uterus breaks off during menstruation?
A
Perimetrium
B
Endometrium
C
Myometrium
D
Epimetrium
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Q. 70
Why is reproduction considered a fundamental feature of all life forms?
A
It ensures the growth of existing organisms
B
It enables the exchange of genetic material between individuals
C
Each individual exists due to this process
D
It helps in maintaining body temperature
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Q. 71
Characters transmitted from parents to offspring are present in:
A
genes
B
cytoplasm
C
ribosome
D
golgi bodies
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Q. 72
Which of the following accessory glands are associated with human male reproductive system ?
A
Seminal vesicle, prostate glands & cowper’s glands
B
Seminal vesicles & cowper’s glands
C
Seminal vesicles & prostate glands
D
Prostate & cowper’s glands
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Q. 73
The hormone that supports endometrium during pregnancy is
A
Luteinizing hormone
B
None
C
Oestrogen
D
Progesterone
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Q. 74
Which one of the following is not a method of reproduction?
A
Budding
B
Spore formation
C
Regeneration
D
Vegetation
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Q. 75
An unisexual flower
A
Has either petal or sepal
B
Has either carpel or stamen
C
Do not have carpel
D
Do not have stamen
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Q. 76
Length of pollen tube depends on the distance between :
A
upper surface of stigma and lower part of style.
B
pollen grain and upper surface of stigma.
C
pollen grain in anther and upper surface of stigma.
D
pollen grain on upper surface of stigma and ovule.
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Q. 77
The ability of cell to divide into several cells during reproduction in Plasmodium is called ________ .
A
multiple fission
B
reproductive division
C
budding
D
binary fission
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Q. 78
Which of the following organisms does not depend on reproduction to exchange genetic material?
A
Bacterium
B
Cockroach
C
Papaya
D
Lion
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Q. 79
Copper T and Loops are
A
Conventional devices
B
Conducive devices
C
Contaminating devices
D
Contraceptive devices
Click an option to check your answer
Q. 80
Vegetative propagation refers to formation of new plants from
A
stem, flowers and fruits
B
stem, roots and flowers
C
stem, leaves and flowers
D
stem, roots and leaves
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Q. 81
What is the significance of reproduction for species?
A
It ensures the survival of the fittest
B
It allows for the adaptation to changing environments
C
It provides a means for species continuation
D
It helps in regulating body temperature
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Q. 82
The ovary releases an egg approximately every
A
28 days
B
8 days
C
21 days
D
14 days
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Q. 83
Which of these secretes seminal fluid?
A
Prostate gland
B
Neither of these
C
Both of these
D
Seminal vesicle
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Q. 84
The fusion of a male and a female gamete results in the formation of
A
zygote
B
spore
C
egg
D
sperm
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Q. 85
Male reproductive organ in flowering plant is-
A
Ovary
B
Carpel
C
Corolla
D
Stamen
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Q. 86
Organisms in which reproduction is a function of a specific cell type are:
A
bacteria
B
Amoeba
C
unicellular organisms
D
multicellular organisms
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Q. 87
Which of the following is formed during tissue culture?
A
Callus
B
Cotyledon
C
Gametes
D
Embryo
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Q. 88
In which part of the female human reproductive system is the ovum normally fertilized by a sperm?
A
Vagina
B
Uterus
C
Ovary
D
Oviduct
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Q. 89
Which of the following are included in natural methods of birth control ?
A
Vasectomy & tubectomy
B
Condoms & diaphragms
C
Abstinence method & rhythm method
D
Oral pills & vaginal pills
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Q. 90
A fertilized ovule develops into a _____ in an angiosperm plant.
A
cotyledon
B
seed
C
fruit
D
flower
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Q. 91
Vegetative propagation can take place by means of
A
stem only
B
roots only
C
none of these
D
roots, stem and leaves
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Q. 92
Offspring formed as a result of sexual reproduction exhibit more variations because:
A
genetic material comes from two parents of the same species.
B
sexual reproduction is a lengthy process.
C
genetic material comes from many parents.
D
genetic material comes from two parents of different species.
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Q. 93
What is the most common method of reproduction in animals and plants?
A
Asexual reproduction
B
Vegetative propagation
C
Sexual reproduction
D
Budding
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Q. 94
Which of the following statements are true for flowers?
(i) Flowers are always Exemplar INCERT bisexual .
(ii) They are the sexual reproductive organs.
(iii) They are produced in all groups of plants.
(iv) After fertilisation they give rise to fruits.
A
(ii) and (iv)
B
(i) and (iii)
C
(ii) and (iii)
D
(i) and (iv)
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Q. 95
IUCD is for
A
avoiding miscarriage.
B
vegetative propagation
C
contraception
D
increasing fertility
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Q. 96
Which of the following sexually transmitted diseases is caused by a virus?
A
Cholera
B
Chlamydia
C
Hepatitis B
D
Syphilis
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Q. 97
External fertilisation takes place in -
A
goat and fish.
B
dog and goat
C
frog and monkey
D
fish and frog
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Q. 98
Name the process shown in the above diagram of getting back a full organism from its body parts.
A
Fission
B
Fragmentation
C
Budding
D
Regeneration
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Q. 99
Budding is a mode of asexual reproduction in:
A
yeast
B
Plasmodium
C
Amoeba
D
Leishmania
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Q. 100
An animal which can reproduce by budding is
A
Hydra
B
Bryophyllym
C
Yeast
D
All of the above
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Q. 101
The correct sequence of reproductive stages seen in flowering plants is-
A
zygote, gametes, embryo, seedling
B
seedling, embryo, zygote, gametes
C
gametes, zygote, embryo, seedling
D
gametes, embryo, zygote, seedling
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Q. 102
In the list of organisms given below, those that reproduce by the asexual method are:
(i) banana
(ii) dog
(iii) yeast
(iv) Amoeba
A
(i), (iii) and (iv)
B
(ii) and (iv)
C
(ii), (iii) and (iv)
D
(i) and (iv)
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Q. 103
Characters transmitted from parents to offspring are present in
A
ribosome
B
genes
C
golgi bodies
D
cytoplasm
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Q. 104
What is involved in sexual reproduction to form a single cell called a zygote?
A
Fusion of two nuclei
B
Fusion of two types of reproductive cells known as gametes
C
Division of a single cell
D
Formation of spores
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Q. 105
In higher animals, male and female gametes are produced by different individuals. What term is used to describe such individuals?
A
Unisexual
B
Hermaphrodite
C
Bisexual
D
Asexual
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Q. 106
In Rhizopus, tubular thread-like structure bearing sporangia at their tips are called-
A
rhizoids
B
roots
C
hyphae
D
filaments
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Q. 107
In Spirogyra, asexual reproduction takes place by:
A
breaking up of filaments into smaller bits.
B
division of a cell into two cells.
C
division of a cell into many cells.
D
formation of young cells from older cells.
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Q. 108
In which of the following aspects does multiple fission differs from binary fission?
(i) Number of offsprings produced.
(ii) Level of genetic variation in offsprings.
(iii) Number of parents involved.
(iv) Multiple fission happens in Plasmodium whereas binary fission happens in Leishmania.
A
(ii) is correct
B
(iii) is correct
C
Only (i) is correct
D
Both (i) and (iv) are correct
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Q. 109
The Ratio of Number of Chromosomes in a Human Zygote and a Human Sperm is:
A
1:2
B
2:1
C
3 : 1
D
1:3
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Q. 110
What is the principle of natural contraceptive methods?
A
Avoiding sperm and ovum to meet
B
Avoiding release of egg
C
Avoiding release of sperm
D
Abortion when pregnant
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Q. 111
The number of chromosomes present in parents and offspring of a particular species remains constant due to _______ .
A
doubling of chromosomes during zygote formation
B
halving of chromosomes during gamete formation
C
doubling of chromosomes after gamete formation
D
halving of chromosomes after gamete formation
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Q. 112
Where are sperms formed in the human body?
A
Ovary
B
Vas deferens
C
Testis
D
Prostate gland
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Q. 113
Which of these is not a sexually transmitted disease?
A
Gonorrhoea
B
AID
C
Typhoid
D
Syphilis
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Q. 114
Which of the following statements about binary fission is true?
A
Binary fission in Amoeba happens only in the vertical plane.
B
Some multicellular organisms also reproduce through binary fission.
C
Binary fission in Leishmania can happen in any plane.
D
Binary fission produces two new organisms
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Q. 115
Characters that are transmitted from parents to offspring during reproduction show:
A
only similarities with parents
B
only variations with parents.
C
both similarities and variations with parents.
D
neither similarities nor variations.
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Q. 116
What is reproduction?
A
The process of obtaining energy from the environment
B
The process of producing new individual organisms
C
The process of breaking down food for cellular energy
D
The process of exchanging gases in the respiratory system
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Q. 117
Pre- natal sex determination has been prohibited by law due to-
A
Possible danger of mother’s health
B
Increasing cases of female foeticide
C
Increasing cases of male foeticide
D
High cost charged by doctors
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Q. 118
The correct sequence of reproductive stages seen in flowering plants is :
A
zygote, gametes, embryo, seedling
B
gametes, zygote, embryo, seedling
C
gametes, embryo, zygote, seedling
D
seedling, embryo, zygote, gametes
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Q. 119
In human females the fertilized egg gets implanted in the
A
ovary
B
ureter
C
uterus
D
vagina
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Q. 120
Characters that are transmitted from parents to offspring during reproduction show-
A
neither similarities nor variations
B
both similarities and variations with parents
C
only variations with parents
D
only similarities with parents
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Q. 121
Which of the following is not a vegetative propagule?
A
Seed
B
Stem
C
Root
D
Leaf
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Q. 122
The correct sequence of organs in the male reproductive system for transport of:sperms is
A
testis urethra → ureter
B
testis vas deferens → ureter
C
testis vas deferens → urethra
D
testisureter → urethra
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Q. 123
Which of the following is not a part of the female reproductive system in human beings?
A
Vas deferens
B
Ovary
C
Fallopian tube
D
Uterus
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Q. 124
The correct sequence of reproductive stages occurring in flowering plants is:
A
Gametes, Embryo, Zygote, Seed
B
Gametes, Zygote, Embryo, Seed
C
Zygote, Gametes, Embryo, Seed
D
Seed, Embryo, Zygote, Gametes
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Q. 125
During adolescence several changes occur in the human body. Mark one change associated with sexual maturity in boys.
A
Increase in height
B
Weight gain
C
Loss of milk teeth
D
Cracking of voice
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Q. 126
Which process involves the fusion of two gametes to form a zygote?
A
Asexual reproduction
B
Budding
C
Regeneration
D
Sexual reproduction
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Q. 127
_______ is a common tube for urine and sperm in human male.
A
Ureter
B
Urethra
C
Uterus
D
None of the above
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Q. 128
The anther contains :
A
Pollen grains
B
Carpel
C
Ovules
D
Sepals
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Q. 129
Which of the following statements best describes the role of reproduction in the continuity of life?
A
Reproduction is a random process with no significance for species survival
B
Reproduction ensures the transfer of acquired traits to offspring
C
Reproduction solely serves to maintain individual organisms
D
Reproduction contributes to the perpetuation of genetic diversity within species
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Q. 130
After fertilization in plants, what does the ovule gradually develop into?
A
Fruit
B
Bud.
C
Plant.
D
Seed.
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Q. 131
Study the following diagram showing various stages of binary fission in Amoeba: the correct sequence of these diagrams should be:
A
I, III, IV, II, V
B
I, II, IV, III, V
C
III, I, IV, II, V
D
I, IV, III, II, V
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Q. 132
A sexual reproduction takes place through budding in:
A
Yeast
B
Plasmodium
C
Leishmania
D
Amoeba
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Q. 133
To perform an experiment to identify the different parts of an embryo of a dicot seed, first of all you require a dicot seed. Select dicot seeds from the following group. Wheat, Gram, Maize, Pea, Barley, Ground-nut
A
Gram, Maize and Ground-nut
B
Maize, Pea and Barley
C
Gram, Pea and Ground-nut
D
Wheat, Gram and Pea
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Q. 134
An unisexual flower
A
Has either carpel or stamen
B
Has either petal or sepal
C
Do not have stamen
D
Do not have carpel
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Q. 135
Vegetative propagation is a type of:
A
reproduction
B
farming
C
cooking
D
movement control
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Q. 136
Which among the following is not function of testes at puberty?
(i) Formation of germ cells
(ii) Secretion of testosterone
(iii) Development of placenta
(iv) Secretion of estrogen
A
(i) and (iv)
B
(iii) and (iv)
C
(i) and (ii)
D
(ii) and (iii)
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Q. 137
Vegetative propagation refers to formation of new plants from:
A
stem, roots and flowers
B
stem, leaves and flowers
C
stem, roots and leaves
D
stem, flowers and fruits
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Q. 138
What happens when male and female gametes fertilize in sexual reproduction?
A
They form a zygote with characteristics only from the female parent.
B
They form a zygote with characteristics only from the male parent.
C
They form a zygote with characteristics from both parents.
D
They form multiple zygotes with various combinations of characteristics.
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