Answer:
Multi cellular
organisms grow and develop with the involvement of mitotic cell division.
Meiosis occurs in
them to form gametes in their reproductive phase of life cycle.
Significance
of Mitosis
(i) Multi cellular
plants and animals start life as single cells. The process of mitosis gives rise
to many cells which differentiate to form tissues, organs and organ-systems of
the organism.
(ii) It
results in increase in size and growth of an organ.
(iii) Cell
reproduction is used to form new cells to renew certain tissues and to replace
worn out cells.
(iv) Mitosis
is also involved in asexual reproduction in some organisms like in unicellular.
Amoeba and
multi cellular Hydra as well as in vegetative reproduction in plants.
Significance
of Meiosis
(i) Meiosis
is the mechanism by which conservation of specific chromosome number of each
species is achieved across generations in sexually reproducing organisms.
(ii) Meiosis also
increases the genetic variability in the population of organisms from one
generation to the next. Variations are very important for the process of
evolution.
You need to login to perform this action.
You will be redirected in
3 sec