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Question

The root apical meristem consists of 1000 cells which undergo arithmetic growth. After 5 cell divisions, the number of dividing cells and maturing cells are _______ and _______ respectively.


A

6000 and 5000

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B

5000 and 6000

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C

5000 and 1000

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D

1000 and 5000

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Solution

The correct option is D

1000 and 5000


In arithmetic growth, total number of cells after N division for a particular number of cells = Number of initial cells ×(N+1).

Out of the total cells, cells equal to the initial number will retain division capacity while the remaining cells will differentiate.

For 1000 meristematic cells, total cell produced after 5 divisions
= Number of initial cells ×(N+1)
= 1000 ( 5+1) = 6000.

Out of these 1000 cells will retain cell division capacity and 5000 cells will differentiate.


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