HORTICULTURE SCIENCE
ULTRA STRUCTURE OF PLANT CELLS AND ORGANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chlorplast of woody plants
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A stomata of non-woody plants
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The point of gas exchange in woody plants
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The point of gas exchange in non-woody plants
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Detailed explanation-1: -Lenticels allow the exchange of gases between the environment and the internal tissue spaces of the organs. They permit the entrance of oxygen as well as the output of carbon dioxide and water vapor. In apple fruit, lenticels account for up to 21 percent of the transpiration.
Detailed explanation-2: -It functions as a pore, providing a pathway for the direct exchange of gases between the internal tissues and atmosphere through the bark, which is otherwise impermeable to gases. The name lenticel, pronounced with an [s], derives from its lenticular (lens-like) shape.
Detailed explanation-3: -A lenticel is a porous tissue made up of vast intercellular gaps between cells. On stems and roots, lenticels appear as elevated circular, oval, or elongated patches. Lenticels allow gases to pass between the atmosphere and the organs’ interior tissues.