PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the more number of stomata in total number of leaves, the more rate of transpiration
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the more number of stomata in total number of leaves, the less rate of transpiration
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the less number of stomata in total number of leaves, the more rate of transpiration
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there is no effect on the rate of transpiration.
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Detailed explanation-1: -Transpiration is closely related to stomata. Nearly 97 % of water from plants is lost through stomatal transpiration, so the more stomata, the higher the transpiration rate [3].
Detailed explanation-2: -Stomata consist of microscopic pores, each flanked by a pair of guard cells. Guard cells can increase or decrease the size of the pore via changes in their turgor status, hence regulating both CO2 entry into the leaf and transpiration, or the loss of water from the leaf.
Detailed explanation-3: -Transpiration is the driving force behind uptake and transport of water. It is the process of water evaporation through openings called stomata. This creates a pull by replacing the water that has evaporated. This pull in the xylem tissues extends all the way down due to the cohesive forces.
Detailed explanation-4: -Stomata is found in all vascular plants. The opening and closing of the stomata is affected by the environment of the plant, so there is a corresponding relationship between the number of stomata and the environment in which the plant species evolved.