PLANTS
ROOTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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primary root
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root hairs
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secondary root
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tap root
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Detailed explanation-1: -Final answer: Water will be absorbed by the root hair when concentration of solutes in the sap is high.
Detailed explanation-2: -The root hairs take water from the soil by a process called osmosis. In osmosis, water molecules move from a region of higher concentration to a region of lower concentration through a semi-permeable membrane. The concentration of the water molecules is lower in the root hair than in the soil.
Detailed explanation-3: -Root hair absorbs water from soil through osmosis. Water will be absorbed by root hairs by osmosis as the environment in the soil is hypotonic. This kind of absorption takes place passively. The water can easily move from the region of higher concentration to the low concentration without expenditure of energy.