how are the inorganic nutrients being absorbed by the plants? with suitable examples.
how are the inorganic nutrients being absorbed by the plants? with suitable examples.
Inorganic nutrients or minerals are absorbed by the plants from the soil through the process of active transport. They cannot follow passive transport unlike water mainly because of 2 factors.
- They are charged. Hence, they cannot cross the cell membranes.
- Concentration of minerals in soil < Concentration of minerals in roots. Hence, concentration gradient is not present.
Certain proteins in the membranes of root hair cells actively pump ions from soil to cytoplasm of epidermal cells. For endodermal cells, because of the suberin layer, transport of ions occurs in one direction only. Transport proteins of endodermal cells act as control points that adjust the quantity and types of solutes that reach the xylem.
After being up taken, the mineral nutrients are translocated through transpirational stream. Unloading of mineral ions occur at fine vein endings of the sink through diffusion.
Inorganic nutrients or minerals are absorbed by the plants from the soil through the process of active transport. They cannot follow passive transport unlike water mainly because of 2 factors.
- They are charged. Hence, they cannot cross the cell membranes.
- Concentration of minerals in soil < Concentration of minerals in roots. Hence, concentration gradient is not present.
Certain proteins in the membranes of root hair cells actively pump ions from soil to cytoplasm of epidermal cells. For endodermal cells, because of the suberin layer, transport of ions occurs in one direction only. Transport proteins of endodermal cells act as control points that adjust the quantity and types of solutes that reach the xylem.
After being up taken, the mineral nutrients are translocated through transpirational stream. Unloading of mineral ions occur at fine vein endings of the sink through diffusion.
