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Question

Apoplastic movement of water in plants occurs on the outer side of

A
Casparian strips
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B
Plasma membrane
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C
Plasmodesmata
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D
None of the above
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Solution

The correct option is B Plasma membrane
Water in plants is absorbed by the roots through the apoplastic and symplastic pathway. In apoplastic movement, water moves from cell to cell through the intercellular spaces or walls of the cells and hence on the outer side of the plasma membrane. Majority of the water in roots is carried by the apoplastic pathway, except at the casparian strip. Thus, the correct answer is option B.

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