Transpiration is the process by which plants lose the excess water, and it happens through pores called stomata, which can be closed or open to regulate the water loss.
Some of the functions of transpiration are cooling the plant, changing osmotic pressure, and maintaining of water flow from roots to leaves.
Transpiration rate is affected by a number of factors:
• Number and size of leaves., With more and bigger leaves, there is more area and thus more stomata, which means there is more transpiration.
,
• The number of stomata., More stomata mean more transpiration.
,
• Light supply. ,Stomata generally open when there is light present.
,
• Temperature,. When the temperature rises, the transpiration rate increases.
,
• Humidity. ,There is more transpiration in drier environments.
,
• Wind., When there is no wind, water vapor loss in transpiration can remain close to the leaf, and this reduces the transpiration rate. When the wind takes the water vapor away, the transpiration rate increases.
,
• Water supply. ,When water is limited, stomata close to prevent water loss.
This means the transpiration rate would be higher in a hot, dry, and windy environment, so B would be the right answer.