Four students observed the epidermal peel of leaf under a high power microscope and made the sketches as below. The correct sketch would be :
A
I
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B
II
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C
III
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D
IV
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Solution
The correct option is B II Stomata are small pores present in the epidermis of leaves. They regulate the process of transpiration and gaseous exchange. The stomatal pore is enclosed between two bean-shaped guard cells. Guard cells contain chloroplast and a well defined nucleus.