Q. Which is not true for root pressure?
NTA AbhyasNTA Abhyas 2022
Solution:
Root pressure is a positive hydrostatic pressure responsible for pushing of water. A continuous flow of water is maintained in the plants because the leaves transpire water through stomata and to replace the lost water, the water drawn by the roots moves up. This pressure pushes the water up to small heights. Root pressure is also linked to the phenomenon of guttation. It is the loss of water in the form of water droplets from hydathodes of herbaceous plants.
Effects of root pressure are also observable at night and early morning when evaporation is low. Root pressure can, at best, only provide a modest push in the overall process of water transport.
Effects of root pressure are also observable at night and early morning when evaporation is low. Root pressure can, at best, only provide a modest push in the overall process of water transport.