Why Is Transpiration Considered a Necessary Evil

Transpiration is called a necessary evil because it causes water loss in plants, but it is also essential for cooling, nutrient transport, and maintaining water balance.

Transpiration is the process by which water evaporates from the leaves and other parts of a plant. Although it leads to the loss of water, it performs several important functions that help plants survive.

Reasons It Is “Necessary”

• Helps in nutrient transport: Pulls water and minerals from roots to leaves.
• Maintains temperature: Keeps plant parts cool during hot conditions.
• Enables photosynthesis: Continuous water supply keeps photosynthesis active.
• Maintains turgidity: Prevents wilting by keeping cells firm.

Reasons It Is “Evil”

• Leads to water loss, especially in dry conditions.
• May cause wilting if water is not replaced quickly.
• Increases plant stress in drought-prone areas.