OBJECTIVE LIFE SCIENCE
PLANT PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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pallisade cells
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spongy mesophyll
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cotyledon
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stomata and guard cells
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Detailed explanation-1: -The epidermis of leaves has small openings called stomata through which gas exchange. These are the small openings present on the inner surface of the leaves. They are bounded by the two guard cells. Stomata can be opened or closed depending on the turgidity of guard cells.
Detailed explanation-2: -The main functions of stomata are given below: Gaseous exchange: The opening and closing of stomata help in the exchange of gases between the plant and its surrounding.
Detailed explanation-3: -Stomata are composed of a pair of specialized epidermal cells referred to as guard cells (Figure 3). Stomata regulate gas exchange between the plant and environment and control of water loss by changing the size of the stomatal pore.