Give two differences each between :
(i) Active absorption and Passive absorption
(ii) Transpiration and Guttation.
Active absorption |
Passive absorption |
In slowly transpiring plants, the forces developed at the transpiring surface are too low to account for the absorption of water. (2) Absorption is brought by the forces developed in the cells of the root itself. |
In actively transpiring plants absorption of water takes place due to the forces developed at the transpiring surface of the plant (i.e., transpiration pull). Cells of the root do not play any part. Water is pulled through the roots and not by the roots. |
ii. Transpiration and Guttation.
Transpiration |
Guttation |
(1) It is the loss of water by a plant in the form of vapours. (2) The transpired water is pure water. |
Guttation is the loss of liquid droplets from the plant. Guttated water is a dilute solution of both inorganic and organic substances. |