Question

When the temperature of soil is $0^{o}C$ then the water absorption

• A. Increases
• B. Decreases
• C. Not affected
• D. The soil will loose capillary $H_{2}O$

Answer 1

The correct option is B Decreases

Under normal physiological conditions, plants absorb water through both active and passive means. As the temperature decreases, the rate of absorption of water also decreases because of a number of reasons. For example transpiration stops, water solidifies and changes to solid form and cellular respiration stops. In fact, at very low temperatures, when water in the cells solidifies and increase in volume, the plant cells burst. This is called as cold injury.