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Question
The movement of water through tracheary elements is by
The movement of water through tracheary elements is by
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Solution
The correct option is B Osmotic flow
Water flows through xylem tracheids and vessel with the help of osmotic flow. Loss of water through transpiration in leaves create the pulling force. Most of the water is absorbed passively through osmosis and moves in the plant body from higher concentration region to lower concentration region as osmotic flow or transpiration stream. Prepared food or sugars move through bulk flow from source to sink. Imbibition is physical adsorption of water. It is a physical process. Movement of neither sugars nor solutes is under the influence of gravity. Thus, the correct answer is option B.
Water flows through xylem tracheids and vessel with the help of osmotic flow. Loss of water through transpiration in leaves create the pulling force. Most of the water is absorbed passively through osmosis and moves in the plant body from higher concentration region to lower concentration region as osmotic flow or transpiration stream. Prepared food or sugars move through bulk flow from source to sink. Imbibition is physical adsorption of water. It is a physical process. Movement of neither sugars nor solutes is under the influence of gravity. Thus, the correct answer is option B.
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