How water is taken up from soil to the xylem tissue of the plant roots?
a) xylem attracts water molecules
b) roots expel water outside the plant
c) soil expels the water with pressure to the phloem
d) difference in the ion concentration creates a gradient for water movement
Answers
Answer:
Water moves into the roots from the soil by osmosis, due to the low solute potential in the roots (lower Ψs in roots than in soil). This intake of water in the roots increases Ψp in the root xylem, driving water up.
Answer:
a)Water moves into the roots from the soil by osmosis, due to the low solute potential in the roots (lower Ψs in roots than in soil). ... In the case of xylem, adhesion occurs between water molecules and the molecules of the xylem cell walls. Cohesion, which is molecular attraction between “like” molecules.
(B)In order for water to move through the plant from the soil to the air (a process called transpiration), Ψsoil must be > Ψroot > Ψstem > Ψleaf > Ψatmosphere. ... Because of this difference in water potential, water will move from the soil into a plant's root cells via the process of osmosis.
(c)Water moves into the roots from the soil by osmosis, due to the low solute potential in the roots (lower Ψs in roots than in soil). ... In the case of xylem, adhesion occurs between water molecules and the molecules of the xylem cell walls. Cohesion, which is molecular attraction between “like” molecules.
D)The water is transported to the other cells in the root region by osmosis. The movements of water is through the root hairs to the cortical cells and then to the layer of endodermis is through the process of osmosis down the concentration gradient.