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How does an organism grow ? How does rep...

How does an organism grow ? How does repair of worn out parts take place ? Is there any form of reproduction involved in the process ?

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(1) An organism grows from a single celled stage called zygote , by mitotic divisions.
(2) Repair of worn out parts take place due to the formation of new cells formed by controlled mitotic divisions.
(3) In this process cellular reproduction called mitosis in involved.
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