Given below is a microscopic view of a leaf surface. Identify the pores.
A
Nostrils
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B
Stomata
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C
Spiracles
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D
Skin pores
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Solution
The correct option is B Stomata Gaseous exchange in plants occurs through tiny pores present on the leaves. These pores are called stomata ('stoma' singular for stomata means pore/opening). Each stoma is bound by two guard cells which control the opening and closing of the pore.