Exposing plants to light, heat, and wind caused the rate of transpiration to increase when compared to normal lab conditions because the plants need to open stomata for the gaseous exchange during photosynthesis. And at this time, the plant is highly exposed to high temperatures and heat, so the maximum amount of water loss occurs.
What is Transpiration?
Transpiration may be defined as a process that generally involves the evaporative loss of water by plant cells. It occurs mainly through the stomata in the leaves.
Besides the loss of water vapor in transpiration, the exchange of oxygen and carbon dioxide in the leaf also occurs through such small pores known as stomata.
While in normal conditions plants receive all sources of processes and nutrients through artificial means, so they never undergo high exposure to climate alterations. Thus, the rate of transpiration remains almost the same in all possible instances.
Therefore, it is well described above.
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