First slide

Long Distance Transport of Water

Question

Active uptake is not involved during the movement of

Easy

A

water from soil to mesophyll cells of plant
B

minerals from soil to mesophyll cells of plant.
C

sugars from mesophyll cells to other parts of the plant
D

unloading of sugars at the sink

Solution

Movement of water into the plant body, within the plant and from plant to atmosphere is always passive. It takes place either by diffusion or mass flow or osmosis. The movement of water is from a region of higher water potential to a region of lower water potential. i.e. down the gradient of water potential. Movement of solutes is both active and passive.

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