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Subjects

Science

Reproduction

प्रजनन

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.

Practice questions

What benefit can arise from genetic contribution of both parents in a zygote?Why is sexual reproduction important in nature even though it takes more time and energy?Why is reproduction not essential for an individual life but essential for a species?If anthers are removed from a flower, what will happen to self-pollination of the same flower?If the stigma is removed, why will fertilization be difficult even if pollen is present nearby?If a flower has an ovary but no ovules, why will seeds not form?Why is it important that the egg reaches the fallopian tube after ovulation?If ovulation occurs but sperm does not reach the fallopian tube, what will be the result?Why is safe sexual behavior considered part of reproductive health?What is the basic similarity among all methods of reproduction?What is the importance of both reproduction and variation for long-term survival of a species?What is the most balanced importance for organisms when genetic material is not copied exactly during reproduction?Why can low variation in asexual reproduction become a risk for a population in a changing environment?If the nucleus divides into two parts in binary fission but the cell membrane does not form separate cells what will happen?Formation of many daughter cells from one cell in multiple fission depends mainly on which event?Why does a bud in Hydra remain attached to the parent before separation?Why is fragmentation successful in Spirogyra but generally not successful in complex animals?Why is considering regeneration only as repair an incomplete idea?What is the main adaptation of thick walls in spores of spore forming organisms?If fungal spores disperse by air why is producing a large number of spores useful?