AP BIOLOGY

Detailed explanation-1: -The bulk of water absorbed and transported through plants is moved by negative pressure generated by the evaporation of water from the leaves (i.e., transpiration)-this process is commonly referred to as the Cohesion-Tension (C-T) mechanism.

Detailed explanation-2: -Vascular plants absorb water from the soil as a result of transpiration, in which water is lost to the atmosphere through the stomata, or plant pores that facilitate gas exchange.

Detailed explanation-3: -Plants absorb water and minerals from the soil via their roots. The root hairs on roots increase the surface area of roots to facilitate absorption of water and minerals that are dissolved in the soil water. The xylem then conducts the absorbed water and minerals from the roots to the shoot system.

Detailed explanation-4: -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-5: -Plants absorb water through their entire surface – roots, stems and leaves. However, the majority of water is absorbed by root hairs. Root hairs are thin-walled uni-cellular outgrowths of epidermis.