How do organisms reproduce class 10 test papers?
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Variation in arises due to sexual reproduction or mistakes during copying of DNA .
Variation are beneficial as they makes one better adapted and suited for the changing environment, thus increases the chances of survival. If the environmental condition changes the nature will select individuals having those variation which will help them in surviving under new environment. For example if there are variation in bacteria which makes it able to withstand high temperature then, if the environment conditions change and there is increase in temperature all the bacteria will die except those who have variation.
But variations are not necessary for individuals to survive as individual even with out variation can perform all the life process like photosynthesis, respiration, digestion etc. well.
Variation are beneficial as they makes one better adapted and suited for the changing environment, thus increases the chances of survival. If the environmental condition changes the nature will select individuals having those variation which will help them in surviving under new environment. For example if there are variation in bacteria which makes it able to withstand high temperature then, if the environment conditions change and there is increase in temperature all the bacteria will die except those who have variation.
But variations are not necessary for individuals to survive as individual even with out variation can perform all the life process like photosynthesis, respiration, digestion etc. well.
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