Transpiration increases with an increase in:

In which of the following situations would the transpiration rate be least affected by changes in humidity or temperature?

Cohesion-tension theory is directly related to

When is the transpiration pull generated?

Hydathodes perform the function of

If the rates of transpiration and water absorption of a flowering plant are measured over a period of $24$ hours,it is found that the rate of transpiration reaches its peak at about mid-day and then declines,whereas the peak for water absorption is reached approximately two hours later. Which one of the following statements provides the best explanation of these results?