Reproduction MCQ Set-3

Question 1

1. A cutting from a rose plant grows into a new plant, whereas a cut-off leaf does not (unlike Bryophyllum). This is because the cutting (stem) contains:

Accepted Answer

Apical buds

Answer

Spores

Answer

Gametes

Answer

Seeds

Question 2

2. What is the key difference between fragmentation (like in Spirogyra) and regeneration (like in Planaria)?

Accepted Answer

Fragmentation is a normal mode of reproduction; Regeneration is primarily a survival mechanism that can lead to reproduction.

Answer

Fragmentation is sexual; Regeneration is asexual.

Answer

Fragmentation occurs in animals; Regeneration occurs in plants.

Answer

Fragmentation requires spores; Regeneration requires buds.

Question 3

3. (HOTS) DNA copying is an essential part of reproduction. What is the primary significance of minor inaccuracies (variations) during this copying process?

Accepted Answer

They are the basis for the evolution of a species.

Answer

They always lead to the death of the cell.

Answer

They only occur in asexual reproduction.

Answer

They stop the organism from reproducing.

Question 4

4. Which of the following correctly traces the path of pollen after pollination?

Accepted Answer

Stigma -> Style -> Ovary -> Ovule

Answer

Anther -> Stigma -> Ovary -> Style

Answer

Stigma -> Ovule -> Style -> Ovary

Answer

Ovule -> Ovary -> Stigma -> Style

Question 5

5. In the human male, why are the testes located outside the abdominal cavity in the scrotum?

Accepted Answer

Sperm formation requires a temperature lower than the normal body temperature.

Answer

To protect them from physical injury.

Answer

To store the testosterone hormone.

Answer

Sperm formation requires a temperature higher than the normal body temperature.

Question 6

6. (HOTS) A plant produced by vegetative propagation (e.g., a cutting) is genetically:

Accepted Answer

Identical to the parent plant.

Answer

Different from the parent plant, showing variation.

Answer

A hybrid of two different plants.

Answer

Weaker than the parent plant.

Question 7

7. What is the function of the fluid secreted by the seminal vesicles and the prostate gland in the human male reproductive system?

Accepted Answer

It provides nutrition to the sperm and makes their transport easier.

Answer

It kills the sperm to control population.

Answer

It triggers the production of ova in the female.

Answer

It blocks the path of urine during ejaculation.

Question 8

8. The plumule and radicle are parts of the:

Accepted Answer

Embryo (within the seed)

Answer

Flower (stamen)

Answer

Pollen grain

Answer

Ovary

Question 9

9. Which of the following STDs are both caused by bacteria?

Accepted Answer

Syphilis and Gonorrhoea

Answer

HIV and Warts

Answer

HIV and Syphilis

Answer

Warts and Gonorrhoea

Question 10

10. Which event marks the beginning of the thickening of the uterine wall (endometrium) during the menstrual cycle?

Accepted Answer

Ovulation (release of the egg)

Answer

Menstruation (bleeding)

Answer

Fertilization of the egg

Answer

Implantation of the embryo

Question 11

11. A Spirogyra filament breaks into three pieces. Each piece grows into a new, complete filament. This is an example of:

Accepted Answer

Fragmentation

Answer

Budding

Answer

Regeneration

Answer

Spore formation

Question 12

12. In a flower, which parts are directly involved in the process of sexual reproduction?

Accepted Answer

Stamens and Pistil (Carpel)

Answer

Sepals and Petals

Answer

Petals and Stamens

Answer

Sepals and Pistil

Question 13

13. The ability of a cell to divide and differentiate into a whole organism (as seen in Planaria) is called:

Accepted Answer

Totipotency

Answer

Pollination

Answer

Fertilization

Answer

Menstruation

Question 14

14. A Copper-T (IUCD) is a contraceptive device. How does it primarily work?

Accepted Answer

It prevents the im plantation of the fertilized egg in the uterus.

Answer

It stops the ovaries from releasing eggs (prevents ovulation).

Answer

It acts as a physical barrier, stopping sperm entry.

Answer

It destroys the sperm as soon as they enter.

Question 15

15. In Amoeba and Leishmania, the parent cell divides to form two daughter cells. The key difference is that Amoeba divides in any plane, while Leishmania divides:

Accepted Answer

Longitudinally (in a definite plane).

Answer

In multiple planes (multiple fission).

Answer

Horizontally (in a definite plane).

Answer

Only when it forms a bud.

Question 16

16. (HOTS) Self-pollination (pollen from the same flower) is prevented in some plants (like papaya) because the flowers are:

Accepted Answer

Unisexual

Answer

Bisexual

Answer

Asexual

Answer

Very small

Question 17

17. After fertilization in a plant, the zygote divides multiple times to form the:

Accepted Answer

Embryo

Answer

Seed Coat

Answer

Fruit

Answer

Endosperm

Question 18

18. During puberty, what changes are common to both human males and females?

Accepted Answer

Growth of hair in armpits and genital area

Answer

Growth of facial hair

Answer

Cracking of voice

Answer

Broadening of shoulders

Question 19

19. The part of the seed that emerges first during germination and develops into the root system is the:

Accepted Answer

Radicle

Answer

Plumule

Answer

Cotyledon

Answer

Seed coat

Question 20

20. In Rhizopus, what is the advantage of producing spores in sporangia?

Accepted Answer

Spores are thick-walled and can survive unfavourable conditions.

Answer

Spores are heavy and fall directly below the parent.

Answer

Spores are gametes that must fuse.

Answer

Spores are produced by budding.

Question 21

21. Which human reproductive organ is correctly matched with its function?

Accepted Answer

Oviduct (Fallopian tube) - Site of fertilization

Answer

Ovary - Site of implantation

Answer

Uterus - Site of fertilization

Answer

Vagina - Site of sperm production

Question 22

22. What is the primary role of the petals in a flower?

Accepted Answer

To attract pollinators (like insects).

Answer

To protect the bud.

Answer

To produce pollen.

Answer

To receive the pollen.

Question 23

23. Which of the following represents the correct sequence of events leading to pregnancy?

Accepted Answer

Ovulation -> Fertilization -> Zygote formation -> Implantation

Answer

Ovulation -> Fertilization -> Implantation -> Zygote formation

Answer

Fertilization -> Ovulation -> Zygote formation -> Implantation

Answer

Zygote formation -> Ovulation -> Fertilization -> Implantation

Question 24

24. In Hydra, a bud grows as an outgrowth from the parent body, detaches, and becomes an independent organism. This process is:

Accepted Answer

Asexual reproduction (Budding)

Answer

Regeneration

Answer

Sexual reproduction

Answer

Fragmentation

Question 25

25. Oral contraceptive pills (OCPs) work by:

Accepted Answer

Preventing ovulation (release of the egg) by changing hormone levels.

Answer

Blocking the fallopian tubes.

Answer

Killing the sperm.

Answer

Creating a physical barrier in the uterus.

Question 26

26. (HOTS) Why is it difficult to trace the parentage of an organism that reproduces by spore formation (like bread mould)?

Accepted Answer

The spores are microscopic and dispersed widely, mixing with spores from many other ""parents"".

Answer

Spores are identical to gametes.

Answer

Spore formation is a type of sexual reproduction.

Answer

The spores fuse with other spores before germinating.

Question 27

27. The part of the human female reproductive system where the embryo develops for nine months is the:

Accepted Answer

Uterus

Answer

Ovary

Answer

Oviduct

Answer

Vagina

Question 28

28. In grafting (a vegetative propagation technique), the 'scion' is the (X) and the 'stock' is the (Y).

Accepted Answer

X: Shoot system, Y: Root system

Answer

X: Root system, Y: Shoot system

Answer

X: Leaf, Y: Stem

Answer

X: Flower, Y: Root

Question 29

29. The main advantage of using a condom as a contraceptive method is that it:

Accepted Answer

Also protects against sexually transmitted diseases (STDs).

Answer

Is a permanent surgical method.

Answer

Changes the hormonal balance of the body.

Answer

Is 100% effective in all cases.

Question 30

30. Which event must occur for a flower to develop into a fruit?

Accepted Answer

Fertilization

Answer

Pollination

Answer

Germination

Answer

Budding

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