PLANTS
PLANT TISSUE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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guard cells
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tracheids
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vessel elements
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companion cells
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Detailed explanation-1: -Stomatal guard cells. Stomatal guard cells are essential to keep one particular component inside the plant-water. However, they must also allow the gaseous exchange essential for photosynthetic activity.
Detailed explanation-2: -Guard cells regulate the opening and closing of stomata. Stomata allow oxygen and carbon dioxide to either enter or leave the plant. Water vapour leaves the plant through stomata as well; by a process known as transpiration.
Detailed explanation-3: -So, the correct answer is ‘Subsidiary cells. ‘
Detailed explanation-4: -Two highly specialized cells, the guard cells that surround the stomatal pore, are able to integrate environmental and endogenous signals in order to control the stomatal aperture and thereby the gas exchange.