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Question

Given below is the diagram of a stomatal apparatus in which of the following all the four parts labeled as 1, 2, 3 and 4 are correctly identified?

A
1 - Subsidiary cell, 2 - Epidermal cell, 3 - Guard cell, 4 - Stomatal aperture
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B
1 - Guard cell, 2 - Stomatal aperture, 3 - Subsidiary cell, 4 - Epidermal cell
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C
1 - Epidermal cell, 2 - Guard cell, 3 - Stomatal aperture, 4 - Subsidiary cell
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D
1 - Epidermal cell, 2 - Subsidiary cell, 3 - Stomatal aperture, 4 - Guard cell
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Solution

The correct option is D 1 - Epidermal cell, 2 - Subsidiary cell, 3 - Stomatal aperture, 4 - Guard cell

Stomata are small pores present in the epidermis of leaves. They regulate the process of transpiration and gaseous exchange.
1 - Epidermal cell
2 - Subsidiary cell
3 - Stomatal aperture
4 - Guard cell


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