FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Stomatal pore
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Guard cells
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Subsidiary cells
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Epidermis
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Detailed explanation-1: -The pores, the guard cells, and the subsidiary cells together constitute the stomatal apparatus.
Detailed explanation-2: -Stomata, turgor-driven cellular valves on the plant aerial epidermis, serve as an interface between a plant and its environment. By dynamically adjusting stomatal pore apertures, stomata facilitate gas exchange for photosynthesis while minimizing water loss via transpiration.
Detailed explanation-3: -The stomata are apertures in the epidermis, each bounded by two guard cells. In Greek, stoma means “mouth”, and the term is often used with reference to the stomatal pore only. Esau (1965, p. 158) uses the term stoma to include the guard cells and the pore between them, and we will use her definition.