Question : In plants water is absorbed by the root hairs by a proces called :
Option 1: Transpiration
Option 2: Respiration
Option 3: Perspiration
Option 4: Osmosis
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Correct Answer: Osmosis
Solution : The correct option is - Osmosis.
Through the mechanism of osmosis, plants are able to take in water and mineral ions from the soil. Water molecules can travel through a membrane that is selectively permeable by a process called osmosis. In this process, water travels from an area of high concentration to an area of low concentration. The cytoplasm of the root hair cell has a lower water potential than soil water. A huge surface area on root hair cells allows for rapid osmosis and water absorption.
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