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 is the deepest conclusion of the whole chapter Reproduction?HardLevel 26If copying is very accurate in asexual reproduction what will be the main benefit and limitation?ExpertLevel 25If a small error occurs while copying genetic material and the offspring survives what can be its possible importance?ExpertLevel 25How can multiple fission be useful for some unicellular organisms in difficult conditions?ExpertLevel 25Why is nuclear division necessary before binary fission in Amoeba?ExpertLevel 25Budding in Hydra and binary fission in Amoeba are both asexual yet what is the main difference in their beginning?ExpertLevel 25Why is it difficult for regeneration to form a whole new organism in complex multicellular organisms?ExpertLevel 25Why is it wrong to treat fragmentation and regeneration as exactly the same?ExpertLevel 25What advantage do fungi get from spores being light and thick walled?ExpertLevel 25If a fungus produces many spores how can reproductive success increase?ExpertLevel 25Why does making many copies of one plant by vegetative propagation have both benefit and risk?ExpertLevel 25Why is vegetative propagation especially useful in cultivation of seedless plants?ExpertLevel 25How does formation of a new plant from potato eyes show that potato is a modified stem?ExpertLevel 25Why can involvement of two parents in sexual reproduction be useful in a changing environment?ExpertLevel 25If pollination occurs but pollen tube does not reach the ovule why will seed formation stop?ExpertLevel 25Why is it necessary to consider pollination and fertilisation as separate events?ExpertLevel 25How is the role of insects in cross pollination related not only to carrying pollen but also to variation?ExpertLevel 25If the stamen of a flower matures but the pistil is not ready what will happen to self pollination?ExpertLevel 25What is the relation between embryo formation in ovule and fruit formation from ovary after fertilisation?ExpertLevel 25If a flower has ovules but fertilisation does not occur why will normal seed formation not happen?ExpertLevel 25