AP BIOLOGY

Detailed explanation-1: -Water moves from soil to root hair cell and then to cortical cell. It then passes through passage cells, pericycle and xylem.

Detailed explanation-2: -Pathways of Water Movement. Water can move through the roots by three separate pathways: apoplast, symplast, and transmembrane (transcellular). In the apoplast pathway (apoplastic route), water moves through the spaces between the cells and in the cells walls themselves.

Detailed explanation-3: -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-4: -The pathway of water from the soil through the plant to the atmosphere is best represented by: Root hairs-cortex-endodermis-vessel elements-intercellular spaces in mesophyll –stomata.