24.How does water enter into root cells from the soil?
Answers
Answer:
Water is found in the spaces between the soil particles. Water and mineral salts first enter through the cell wall and cell membrane of the root hair cell by osmosis. ... There are many, elongated root hairs to increase the total root surface area for water absorption.
Answer:
Concept;
Water enters the root hair cells by osmosis because the cells have a high concentration of minerals/sugars and little water. This lowers the water potential inside the cell so water molecules move down the gradient into the cells. Water can then move through the xylem in the transpiration stream through the plant and out of its leaves.
Given:
How does water enter into root cells from the soil?
Find:
How does water enter into root cells from the soil?
Explanation:
Water enters the root hair cells by osmosis because the cells have a high concentration of minerals/sugars and little water. This lowers the water potential inside the cell so water molecules move down the gradient into the cells. Water can then move through the xylem in the transpiration stream through the plant and out of its leaves.
Osmotic pressure is responsible for the movement of water from the root hairs to the cortical cells and subsequently to the xylem vessels. It is the force required to resist the movement of water across a semipermeable membrane down a concentration gradient. Water molecules are present in the spaces between soil particles. This water is available to plants. The first interaction between water and root hair cells is caused by water absorption. This is the process of water adsorption. Water then enters the cells of the root hair by osmosis. The movement of water is caused by a difference in osmotic pressure. The osmotic pressure of water in the roots is high, and water thus reaches the root hair cells. Water is transported to other cells in the root region by osmosis. Water moves through the root hairs into the cortical cells and then into the endodermis layer by the process of osmosis following a concentration gradient. Water enters the cortex mostly via the apoplastic route and then passes through the endodermis through the symplast to reach the xylem vessels.
Roots grow roots in the soil, which produces weaker solutions compared to the sap of the root cells. Because of this osmosis, roots are able to absorb water by reabsorption through ionizable and water is absorbed by root hairs through cell membranes from the soil.
#SPJ2