What is excess transpiration?

What is excess transpiration?

Excessive transpiration can be extremely injurious to a plant. When water loss exceeds water intake, it can retard the plant’s growth and ultimately lead to death by dehydration. stomate with guard cells.

How was the rate of transpiration affected in each of the experimental situations as compared to the control?

Data Analysis. 1. The rate of transpiration in our experimental plant compared to our control plant was very rapid due to the extreme dry and arid conditions in which we put it in. The heat and dryness of the atmosphere increased the rate of transpiration.

What is transpiration Class 11?

Transpiration is the evaporative loss of water by plants, occurs mainly through the stomata in the leaves. Exchange of oxygen and carbon dioxide in the leaf also occurs through pores called stomata.

Which conditions would give the highest rate of transpiration?

Plants transpire more rapidly in the light than in the dark. This is largely because light stimulates the opening of the stomata (a mechanism). Light also speeds up transpiration by warming the leaf. Plants transpire more rapidly at higher temperatures because water evaporates more rapidly as the temperature rises.

How can you reduce transpiration in plants?

Water loss through transpiration can be reduced by closing the stomata in the leaves using a substance called ABA. When the stomata is closed photosynthesis will decrease because no CO2 can enter through the closed stomata. Less photosynthesis means less energy is produced by the plant and the plant stops growing.

Why does high humidity decrease transpiration?

Any reduction in water in the atmosphere creates a gradient for water to move from the leaf to the atmosphere. The lower the RH, the less moist the atmosphere and thus, the greater the driving force for transpiration. When RH is high, the atmosphere contains more moisture, reducing the driving force for transpiration.

Why does wind increase transpiration?

It is easier for water to evaporate into dryer air than into more saturated air. Wind and air movement: Increased movement of the air around a plant will result in a higher transpiration rate. Wind will move the air around, with the result that the more saturated air close to the leaf is replaced by drier air.

Did wind increase or decrease the rate of transpiration compared to the control?

higher wind speed, greater transpiration rate. Wind speed around a leaf is low then water vapour surrounds the leaf. How does humidity affect the rate of transpiration? the drier the air the faster transpiration happens.