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Question

In a plant organ which is covered by periderm and in which the stomata are absent, gaseous exchange takes place through


A
Aerenchyma
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B
Trichomes
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C
Pneumatophores
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D
Lenticels
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Solution

The correct option is B Lenticels
A lenticel is a porous tissue which possesses cells with large intercellular spaces in the periderm of the secondary organs and the bark of woody stems. It involves in the direct exchange of gasses between the internal tissues and atmosphere through the bark, which is otherwise impermeable to gasses. 

Biology

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