HORTICULTURE SCIENCE
CROP PHYSIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What part of the leaf is responsible for gas exchange?
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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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Explanation:
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: -Guard cells are surrounded by stomatal pores and are located in leaf epidermis.
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.
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