What is regeneration? Give one example of an organism that shows this process and one organism that does not. Why does regeneration not occur in the latter?
CBSE FOREIGN - SET 2 2017
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Regeneration is the capability of an organism to regenerate its parts when they get destroyed. Ex: in planaria if any of its part gets cut or injured this organism has the capacity of dividing cell in that area. Ex: in cockroach if its head is detached it can stay alive till few days but it can’t regenerate its head because Regeneration is carried out by specialized cells which are not present in non-regenerating organisms.
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List any two modes of asexual reproduction in animals. Under which mode of reproduction is vegetative propagation placed and why? List two advantages of vegetative propagation.
What is the effect of DNA copying, which is not perfectly accurate, on the reproduction process? How does the amount of DNA remain constant though each new generation is a combination of DNA copies of two individuals?