NEET BIOLOGY

Detailed explanation-1: -First, the water moves into the mesophyll cells from the top of the xylem vessels. Then the water evaporates out of the cells into the spaces between the cells in the leaf. After this, the water leaves the leaf (and the whole plant) by diffusion through stomata.

Detailed explanation-2: -Water moves from the xylem into the mesophyll cells, evaporates from their surfaces and leaves by diffusion through the stomata. The increased solute concentration causes water to move by osmosis from the xylem into the phloem. The positive pressure that is produced pushes water and solutes down the pressure gradient.

Detailed explanation-3: -Water then moves from cell to cell through the root cortex by osmosis down a concentration gradient. This means that each cell has a lower water concentration than the one before it. In the centre of the root the water enters the xylem vessels-vein-like tissues that transport water and minerals up a plant.

Detailed explanation-4: -Once water leaves the xylem, it moves across the bundle sheath cells surrounding the veins.

Detailed explanation-5: -In the leaves, water molecules leave the xylem vessels and move from cell to cell. They move through the spongy mesophyll layer by osmosis along a concentration gradient. Water then evaporates into spaces behind the stomata and diffuses through the stomata into the surrounding air.