AP BIOLOGY

Detailed explanation-1: -If Xylem is removed from a plant, the plant will not be able to transport water to leaves, hindering various processes like photosynthesis, transpiration, growth etc. The plant will initially wilt and then ultimately die. Was this answer helpful?

Detailed explanation-2: -Injured xylem will carry less water to the branches and leaves. Both of these problems limit the supply of vitally needed water and salts to the leaves. Plants that had little time to prepare for cold temperatures will be more severely injured than those that cooled more slowly.

Detailed explanation-3: -Transpiration occurs when plants take up liquid water from the soil and release water vapor into the air from their leaves.

Detailed explanation-4: -Water is passively transported into the roots and then into the xylem via cells of cortex. Plants absorb water from the soil by osmosis. Root hair cells are adapted for this by having a large surface area to speed up osmosis. The forces of cohesion and adhesion cause the water molecules to form a column in the xylem.

Detailed explanation-5: -The tension created by transpiration “pulls” water in the plant xylem, drawing the water upward in much the same way that you draw water upward when you suck on a straw. Cohesion (water sticking to each other) causes more water molecules to fill the gap in the xylem as the top-most water is pulled toward the stomata.