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Question

Movement of water through semipermeable membrane produces

A
wall pressure
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B
diffusion pressure
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C
osmotic pressure
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D
turgor pressure
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Solution

The correct option is C osmotic pressure
The pressure that is required to prevent water from diffusing or undergoing osmosis in spite of a difference in water potentials, is called osmotic pressure (OP). Thus, movement of water inside or outside a cell generates osmotic pressure.

Wall pressure (WP) is the pressure exerted by the cell wall on the protoplasm in a fully turgid cell. It is generally equal and opposite to turgor pressure except in a plasmolysed cell.

Diffusion pressure (DP) is the pressure exerted by the molecules that are undergoing diffusion.

Turgor pressure (TP) is the pressure applied against the cell wall by the protoplasm of a cell.

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