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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 2 · 25 questions

Practice questions

01Which is the correct sequence in the formation of a zygote and an embryo?

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02Why is implantation of the developing embryo in the uterine wall important?

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03Why is the placenta important in the connection between the mother and the developing embryo?

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04How is menstruation related to preparation of the uterus and the absence of pregnancy?

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05What directly causes the development of secondary sexual characteristics during adolescence?

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06Why is a condom associated with reproductive health as well as contraception?

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07How do a Copper T and contraceptive pills prevent pregnancy by different mechanisms?

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08Why is sterilisation considered a permanent contraceptive method?

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09Why must gametes have half the usual chromosome number in sexual reproduction?

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10If both gametes had the full chromosome number, what would happen to the chromosome number across generations?

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11Why can sexual reproduction be beneficial in changing environments, even though it often takes more time and energy?

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12Why is asexual reproduction usually limited in the genetic variation it produces, even though it is often fast?

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13What is the correct difference between a male flower and a bisexual flower?

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14If a flower has a pistil but no stamens, what type of flower is it?

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15If a plant relies on wind or insects to carry pollen, why may cross-pollination decrease when those agents are absent?

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16What is the correct relationship between ovulation and fertilisation in human reproduction?

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17If fertilisation occurs but the embryo does not implant in the uterine lining, why is further development unlikely?

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18Why can different contraceptive methods have different mechanisms even though they share the same basic aim?

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19Why is relying only on treatment not enough to prevent sexually transmitted infections (STIs)?

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20Why is accurate information about reproductive health important from a social point of view as well?

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21Which statement clearly distinguishes reproduction from growth?

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22Why can variation produced through reproduction help a species survive over the long term?

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23In which condition can asexual reproduction be especially beneficial?

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24What is a basic similarity between sexual reproduction in flowering plants and humans?

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25Which statement correctly summarizes reproduction, asexual reproduction and sexual reproduction?

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