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B
Have stomata on lower surface
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C
Have stomata
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D
Have stomata only on upper surface
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Solution
The correct option is C Have stomata only on upper surface Aquatic plants float on the surface of the water and therefore stomata are not found in the lower epidermis. Stomata are found on the upper epidermis because for direct exchange of gases between the leaf and the atmosphere. But in the terrestrial plants, stomata are at the lower epidermis because this is an adaption to reduce the excessive loss of water through transpiration.