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Question

Assertion : The opening of stoma is also aided due to the orientation of the microfibrils in the cell walls of the guard cells.

Reason : Cellulose microfibrils are oriented radially rather than longitudinally, making it easier for stoma to open.


A

if both A and R are true and R is the correct explanation of A

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B

if both A and R are true but R is not the correct explanation of A

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C

if A is true but R is false

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D

if both A and R are false.

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Solution

The correct option is A

if both A and R are true and R is the correct explanation of A


The radial orientation of the cellulose microfibrils helps in the stretching of the inner wall and the bulging out of the outer wall of the guard cells. This makes the stoma easy to open.

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