Why transpiration is known as necessary evil?
Answers
Answer:
Transpiration is the process of plant changing its water to water vapour and leaving that to the atmosphere
Answer:
Transpiration is the process in which there is a loss of water in the form of water vapour from the stomatal openings. It is beneficial to the plants due to its role in the ascent of sap, absorption and translocation of mineral salts and in the regulation of the temperature of plant tissues. However, transpiration also causes loss of water unnecessarily. Due to the process of transpiration, there is pressure on the plant for the absorption of water. Therefore, the process of transpiration is called a necessary evil. Transpiration controls the rate of water absorption. It helps in the absorption of minerals and regulate the temperature. At the same time, it has disadvantages such as it leads water deficiency in plants and thus, impair the processes of photosynthesis and growth, etc. It is therefore said ‘transpiration is a necessary evil’.