What are lenticells? do all plants respire through lenticells? how do lenticells function?
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Lenticel is a small cork pore, or narrow line, on the surface of woody plant stems.It functions as a pore allowing for the interchange of gases between the interior tissue and the surrounding air. Internal plant tissue is impermeable to gases without lenticels.All trees have lenticel, although some is more conspicuous than others. As stems and roots mature, lenticel development continues in the new bark or root.They serve as a site of gas exchange on the plant (place where oxygen and carbon dioxide can enter and exit). Lenticels are also, unfortunately, a site where pathogens such as fungi, bacteria, and viruses can enter the plant.
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Answer:
i. Lenticels are lens-shaped openings on epidermis, through which gaseous exchange takes place.
ii. Cork cells are with deposition of suberin in the cell wall which makes them impervious to air and water.
iii. Due to this, at certain regions, the cork cambium cuts off loosely arranged parenchymatous cells, which then rupture the epidermis and forms openings called lenticels.
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