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Subjects

Science

Reproduction

In this Class 10 Science topic from the “World of Living” chapter, students explore how organisms produce new individuals and why reproduction is essential for the continuation of life. They compare asexual and sexual reproduction, study reproductive processes in plants and humans, and understand puberty, the human reproductive system, fertilisation, menstruation, and basic reproductive health. The topic also introduces contraception and the role of responsible choices in preventing unwanted pregnancy and sexually transmitted infections.

Hard · Level 1 · 25 questions

Practice questions

01Why is reproduction considered a life process even though it is not immediately necessary for the survival of an individual organism?

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02If genetic information is not copied during reproduction, what is the main problem in forming offspring?

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03Why can a small variation arising during genetic copying sometimes be useful?

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04Why are offspring produced by asexual reproduction usually very similar to their parent?

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05What is the main reason sexual reproduction can produce greater variation?

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06What is the main basis for distinguishing binary fission from multiple fission?

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07Amoeba can divide in different planes, whereas Leishmania divides along a definite plane. Why?

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08How does spore formation help Rhizopus survive unfavourable conditions?

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09What does budding in Hydra demonstrate?

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10What is the main difference between fragmentation and regeneration?

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11Why can a cut piece of Planaria develop into a complete organism?

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12Why do plants produced by vegetative propagation usually have similar traits?

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13Why is vegetative propagation especially useful in agriculture for plants that do not produce seeds?

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14The production of many plants from a small piece of tissue in tissue culture is based on which principle?

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15Which statement best describes genetic variation in self-pollination compared with cross-pollination?

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16After pollination, which structure most directly helps carry the male gametes towards the ovule for fertilisation?

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17If pollen grains reach the stigma but no pollen tube forms, why is fertilisation likely to be prevented?

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18After fertilisation in a flower, what usually happens to the ovary and the ovule?

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19Why is fruit formation after seed formation useful for a plant?

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20Which statement best explains why water, air and a suitable temperature are needed for seed germination?

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21Why is it incomplete to describe the testes only as organs that produce sperm in the human male reproductive system?

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22What is the scientific reason that the testes are located in a sac outside the body?

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23Why does hormone production in the testes not stop when the sperm duct is cut?

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24Why is the importance of the ovaries in the human female reproductive system not limited to egg production?

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25Why does fertilisation usually occur in a fallopian tube in humans?

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