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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.

Expert · Level 1 · 25 questions

Practice questions

01If copying is very accurate in asexual reproduction what will be the main benefit and limitation?

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02If a small error occurs while copying genetic material and the offspring survives what can be its possible importance?

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03How can multiple fission be useful for some unicellular organisms in difficult conditions?

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04Why is nuclear division necessary before binary fission in Amoeba?

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05Budding in Hydra and binary fission in Amoeba are both asexual yet what is the main difference in their beginning?

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06Why is it difficult for regeneration to form a whole new organism in complex multicellular organisms?

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07Why is it wrong to treat fragmentation and regeneration as exactly the same?

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08What advantage do fungi get from spores being light and thick walled?

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09If a fungus produces many spores how can reproductive success increase?

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10Why does making many copies of one plant by vegetative propagation have both benefit and risk?

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11Why is vegetative propagation especially useful in cultivation of seedless plants?

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12How does formation of a new plant from potato eyes show that potato is a modified stem?

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13Why can involvement of two parents in sexual reproduction be useful in a changing environment?

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14If pollination occurs but pollen tube does not reach the ovule why will seed formation stop?

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15Why is it necessary to consider pollination and fertilisation as separate events?

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16How is the role of insects in cross pollination related not only to carrying pollen but also to variation?

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17If the stamen of a flower matures but the pistil is not ready what will happen to self pollination?

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18What is the relation between embryo formation in ovule and fruit formation from ovary after fertilisation?

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19If a flower has ovules but fertilisation does not occur why will normal seed formation not happen?

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20How can the need of water air and suitable temperature in seed germination be best understood?

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21Why is the presence of testes in the scrotum important for sperm production in humans?

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22If the sperm duct is blocked why will fertilisation not occur even if sperms form in the testes?

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23What is the most correct difference between functions of ovary and uterus?

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24If the oviduct is blocked why can pregnancy be difficult even if the menstrual cycle is normal?

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25Why does pregnancy not continue if the fertilised egg fails to attach in the uterus?

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