AP BIOLOGY

Detailed explanation-1: -Vegetable plants transpire water from their leaves, creating suction on the water at the root surface that draws the nutritious surface soil solution toward the plant roots. This process of mass flow caused by leaf transpiration explains how most plant nutrients (98 percent) move from the soil to the root surface.

Detailed explanation-2: -Root hairs form in the zone of differentiation and this is where they begin to poke out into the soil to absorb water and mineral nutrients. Root hairs greatly increase the root surface area and therefore increase the ability of a plant to absorb water and nutrients.

Detailed explanation-3: -Plants absorb water and nutrients through the xylem: a tissue made up of thin tubes located just below the surface of the plant’s stems. The molecules in this tissue attract water molecules from the soil, so that the water is pulled upwards. This process is called capillary action.

Detailed explanation-4: -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.

Detailed explanation-5: -They drink through their roots, which are found under the soil. Plants need the sun’s light to grow. The sun’s rays help the plant process the carbon dioxide and water to turn it into food!