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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 5 · 25 questions

Practice questions

01What is the most balanced importance for organisms when genetic material is not copied exactly during reproduction?

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02Why can low variation in asexual reproduction become a risk for a population in a changing environment?

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03If the nucleus divides into two parts in binary fission but the cell membrane does not form separate cells what will happen?

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04Formation of many daughter cells from one cell in multiple fission depends mainly on which event?

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05Why does a bud in Hydra remain attached to the parent before separation?

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06Why is fragmentation successful in Spirogyra but generally not successful in complex animals?

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07Why is considering regeneration only as repair an incomplete idea?

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08What is the main adaptation of thick walls in spores of spore forming organisms?

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09If fungal spores disperse by air why is producing a large number of spores useful?

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10Why can a crop produced by vegetative propagation have a higher risk of disease spread?

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11In which situation will vegetative propagation prove more useful than reproduction by seeds?

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12Why may a potato piece without an eye fail to produce a new plant?

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13Why is a seed not needed for plant formation from a Bryophyllum leaf?

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14Why is fusion of gametes in sexual reproduction more important than just increasing numbers?

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15Why can offspring from self pollination be less varied than those from cross pollination?

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16What can be the most suitable reason for fertilisation failing even after pollination?

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17If pollen grains reach the stigma of a flower of a wrong species why will seeds usually not form?

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18When can seed formation still be possible after removing stamens from a flower?

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19Why do seeds remain inside the fruit after fertilisation?

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20If the ovule lacks a female gamete why will seed formation not occur even after pollination?

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21Why can seed development stop without air even if water is available for germination?

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22Why are testes located outside the body in the scrotum?

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23If the sperm duct is blocked why will fertilisation be difficult even when testes are normal?

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24How can deficiency of fluid in semen affect the function of sperms?

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25If the ovary produces ovum normally but the oviduct is blocked why will pregnancy be hindered?

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