NEET BIOLOGY

Detailed explanation-1: -The following factors affect the rate of transpiration : Temperature-If temperature is increased, evaporation and diffusion are faster. Humidity-If the leaf is surrounded by moist air (due to increase in humidity), the rate of diffusion of water vapor decreases. Wind Speed-The moving wind removes humidity.

Detailed explanation-2: -The transpiration rate is directly proportional to the absorption of water by the roots from the soil. A decrease in water absorption causes the closure of stomata and wilting, thereby reducing the rate of transpiration.

Detailed explanation-3: -External factors affecting the rate of transpiration are: atmospheric humidity, temperature, light, wind velocity, atmospheric pressure and available soil water. Some internal factors also affect rate of transpiration e.g., leaf area, leaf structure and age of plants.

Detailed explanation-4: -Temperature-increasing the temperature makes transpiration happen faster-the plant loses more water from its leaves. This is because water evaporates at a faster rate when it’s warmer, so there’ll be a greater concentration gradient.