MAJOR DIFFERENCES BETWEEN ACTIVE ABSORPTION AND PASSIVE ABSORPTION OF WATER IN PLANTS
Active Absorption of water | Passive absorption of water |
It occurs due to the activity of root and root hairs. | It occurs mainly due to the activity of upper part of the plant such as shoot and leaves. |
Water is absorbed by the osmotic or non-osmotic processes along or against DPD gradient. | Water is absorbed as a result of tension created by transpiration pull. |
It involves symplast (via. Protoplasm) movement of water. | It involves apoplast movement of water. i.e., through cell walls and intercellular spaces. |
It utilizes metabolic energy. | It utilizes solar energy for transpiration. |
Root cells play an active role. | Root cells play a passive role. |
It is independent of transpiration. | It takes place when transpiration is fast. |
It creates a positive pressure in the xylem channels. | It produces a negative pressure in xylem channels. |
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