Mechanism of Transport in Plants

Topic Content:

1. Transports of Mineral Salt and Water:

i. Osmosis is involved in the absorption of mineral saltsIn higher plants, water and minerals are absorbed through root hairs which are in contact with soil water, and form a root hair zone a little behind the root tips. Diagrammatic... More and water, it occurs in the zone of the root hairs. Water moves from the root hairs to the xylemXylem is a plant vascular tissue that transports water and dissolved minerals from the roots to the stems and leaves and also provides physical support. Xylem is one of the two... More cells in the vascular bundles.

ii. Active TransportActive transport moves molecules and ions from a region of lower concentration to a region of higher concentration with the help of energy in the form of ATP. More: The absorptionAbsorption is the movement of digested food molecules from the digestive system into the blood (glucose and amino acids) and lymph (fatty acids and glycerol). The small intestine absorbs most of... More of mineral salts into the root hairs is by active transport. The concentration of mineral salts in the soil water is lower than that of the cells sap of the root