Question

1.Assertion: The cell membrane is called selectively permeable membrane.
Reason: The cell membrane allows the entry and exit of some materials in and out of the cell.​

Answer 1

Answer:

The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. Not all molecules are free to diffuse. If plasma membrane ruptures or breaks down then molecules of some substances will freely move in and out of the cells.

Explanation:

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Answer 2

a) Both assertion and reason are correct statements and reason is the correct explanation of the assertion.