Which statements about water movement in plants are correct? 1 Water can pass through cellulose cell walls. 2 Water can pass through lignified cell walls. 3 Water cannot pass through suberin in cell walls.

TRANSPORT IN PLANTS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	1, 2 and 3
B	1 and 2 only
C	1 and 3 only
D	2 and 3 only

Explanation:

Detailed explanation-1: -Lignin is a waterproof polymer which is present in cell wall to strengthen the cell. Water and other dissolved minerals enter the plants through the soil from the roots and are transported up the plant through the xylem. Water reaches the lignified walls that are impermeable with water.

Detailed explanation-2: -Osmosis plays a central role in the movement of water between cells and various compartments within plants. In the absence of transpiration, osmotic forces dominate the movement of water into roots.

Detailed explanation-3: -Lignin patterns in xylem cells provide rigidity and water transport across the plant.

Detailed explanation-4: -Cell wall lignification is a complex process occurring exclusively in higher plants; its main function is to strengthen the plant vascular body. This process involves the deposition of ill-defined phenolic polymers, the so-called lignins, on the extracellular polysaccharidic matrix.

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