Question

1) Plants and animals grow by mitotic cell division. What differences do they exhibit in their growth?
2) Enlist the significiance of Mitosis.

Answer 1

Answer:

1. Plant and animal cells both undergo mitotic cell divisions. Their main difference is how they form the daughter cells during cytokinesis. During that stage, animal cells form furrow or cleavage that gives way to formation of daughter cells. Due to the existence of the rigid cell wall, plant cells don't form furrows.

2. (a) Somatic cells are formed by mitosis. Therefore, mitosis is essential for growth.

(b) An overgrown somatic cell is induced to divide so that mitosis help in maintaining a proper surface/ volume ratio.

(C) It is the method of multiplication of unicellular organism.

(d) Mitosis produces multicellular condition.

(f) It is a mechanism for replacing old or worn out cells

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Answer 2

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