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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.

Medium · Level 4 · 25 questions

Practice questions

01If fertilisation does not occur why does the thick lining of uterus break down?

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02What is the main reason reproductive organs become active during adolescence?

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03Secondary sexual characters are related to what?

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04How do contraceptive pills generally help prevent pregnancy?

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05How does a condom help in contraception and protection from sexually transmitted diseases?

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06Where is a copper contraceptive device placed to prevent pregnancy?

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07Why is surgical contraception considered a permanent method?

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08What is the basic principle of sterilisation in preventing pregnancy?

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09Why is safe behaviour necessary to prevent sexually transmitted diseases?

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10Why are testes present in a pouch outside the body in humans for sperm formation?

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11What is the main function of sperm duct?

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12Why is addition of fluid to sperms useful in semen?

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13How is the function of oviduct different from uterus?

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14If the oviduct is blocked why can pregnancy become difficult?

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15Why can stopping of the menstrual cycle be a sign of pregnancy?

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16Why is direct mixing of mother’s and embryo’s blood not necessary in the placenta?

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17Why is copying of genetic material necessary in reproduction?

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18If genetic material is not copied at all what problem will occur in reproduction?

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19Why are many plants produced from cuttings of the same plant highly similar?

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20How is pollination by insects possible in flowers?

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21Why may fertilisation not occur every time even after successful pollination?

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22Why is asexual reproduction useful for rapid increase in number?

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23Why is sexual reproduction considered useful for evolution even though it is slower?

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24Which example correctly matches asexual and sexual reproduction?

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25Why is variation considered important in the chapter Reproduction?

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