Cell Cycle and Cell Division

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During cytokinesis, organelles like mitochondria and

plastids get distributed between the daughter cells.

In some organisms karyokinesis is not followed by

cytokinesis. As a result, multinucleate condition

(syncytium) arises. E.g. liquid endosperm in coconut.

Actin ring

Cleavage

furrow

Cell Plate

Cell Wall

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Mitosis usually seen in division of diploid cell, however

some lower plants and some social insects haploid cells

also undergo mitotic division.

It produces diploid daughter cells with identical genome.

It helps to retain the same chromosome number in all

somatic cells. It helps in the body growth of multicellular

organisms.

Mitosis in the meristematic tissues (apical & lateral

cambium) helps in a continuous growth of plants through

out the life.

It restores the nucleo-cytoplasmic ratio that disturbed

due to cell growth.

It helps in cell repair & replacement. E.g. cells of the upper

layer of the epidermis, lining of the gut & blood cells are

constantly replaced.