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Thursday, 17 January 2019

Gaseous Exchange in Plants




 Gases enter and leave the plant through (i) stomata, (ii) lenticels, and (iii) root hairs.

 • Opening and closing of stomata regulate gaseous exchange, especially in leaves. This is brought about by changes in the solute concentration of guard cells, making them turgid (stoma is open) or flaccid (stoma is closed).  

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