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B
Secretion
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C
Transpiration
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D
None of the above
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Solution
The correct option is B Absorption The unicellular hair-like structures present on the surface of the root are known as trichomes. These are finger-like projections of the cells in the regions of the root. The trichomes act like the root hairs. They are involved in the process of absorption of water and minerals from the soil. They also help to increase the surface area for absorption.