Question

Transpiration is a necessary evil in plants. Explain.

Answer 1

Transpiration is a necessary evil in plants because it is inevitable but potentially harmful. Loss of water from the plant results in wilting and causes the death of a plant if a condition of drought is experienced. But transpiration is of great significance for the plant.

• Water is conducted, in most tall plants due to transpiration pull.
• Minerals dissolved in water are distributed throughout the plant body by Transpiration Stream.
• Evaporation of water from the cells of leaves has a cooling effect on plants.
• The wet surface of leaf cells allows gaseous exchange.