As you grow from child hood to adulthood , your skin cells divide only to replace such cells that are lost form the surface . State whether it is true or false and give reason to your answer.

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Solution

This statement is true.
Skin cells keeps on divide to produce new cells, if some cells are lost due to injury. Skin cells has a high power of regeneration.

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Q. Mention whether the following statements are True or False. Give reason in support of your answer. [5 MARKS]
(a) As you grow from childhood to adulthood, your skin cells divide only to replace such cells that are lost from the surface.
(b) The unfertilized human egg has half the number of chromosomes of the body cells.
(c) Nuclear membrane in a mitotically dividing cell remains intact up to the metaphase and disappears only in telophase.
(d) Mitotic cell division can be a mode of reproduction.
(e) Crossing-over between chromatids can occur only between homologous chromosomes.

Mention whether the following statements are true (T) or false (F). Give reason in support of your answer.
(a) As you grow from childhood to adulthood, your skin cells divide only to replace such cells that are lost from the surface. (T/F)
(b) The unfertilised human egg has half the number of chromosomes of the body cells. (T/F)
(c) Nuclear membrane in a mitotically dividing cell remains intact up to the metaphase and disappears only in the telophase. (T/F)
(d) Mitotic cell division can be a mode of reproduction. (T/F)
(e) Crossing-over between chromatids can occur only between homologous chromosomes. (T/F)

State whether true or false:

You have the very same skin cells now, as those you were born with.

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