NDA 2021 Biology question
In a dicot pot herb, vaseline/vegetable oil was applied on the upper surface of one leaf (Experimental leaf 1) and on the lower surface of another leaf (Experimental leaf 2). Vaseline/Vegetable oil was not applied on the control leaf. The plant was deliberately not watered for several days. Which leaf will dry up last ?
Answer: (B)
Solution
In a dicot leaf most of the stomata are on the lower surface. Coating the lower surface (leaf 2) blocks these stomata and greatly reduces
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