AP BIOLOGY

Detailed explanation-1: -Water is necessary for photosynthesis, which is how plants use energy from the sun to create their own food. During this process, plants use carbon dioxide from the air and hydrogen from the water absorbed through their roots and release oxygen as a byproduct. This exchange occurs through pore-like stoma on the leaves.

Detailed explanation-2: -The bulk of water uptake by most plants is via the roots. That said, high humidity does decrease the rate at which water is lost from the plant, and so will decrease the uptake of water from the soil.

Detailed explanation-3: -Water moves into the roots from the soil by osmosis, due to the low solute potential in the roots (lower s in roots than in soil).

Detailed explanation-4: -Plants drink water through a process called osmosis. Osmosis is the movement of a liquid into a living thing, creating a balance of that liquid. For example, if a plant needs water it will use osmosis to pull water through the roots until it has enough water to photosynthesize, or make food.

Detailed explanation-5: -The plants absorb water from the soil with the help of root hair through osmosis. The diffusion of water molecules through a semi-permeable membrane is called osmosis. Root hair absorbs water from soil through osmosis. Water will be absorbed by root hairs by osmosis as the environment in the soil is hypotonic.