PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It enters through the stomata
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The roots absorb it and then it travels up the xylem
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It’s made during a chemical reaction in the stem
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The flowers capture water and deliver it to the leaves
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Detailed explanation-1: -Essentially all of the water used by land plants is absorbed from the soil by roots.
Detailed explanation-2: -Water is passively transported into the roots and then into the xylem via cells of cortex. Plants absorb water from the soil by osmosis. Root hair cells are adapted for this by having a large surface area to speed up osmosis. The forces of cohesion and adhesion cause the water molecules to form a column in the xylem.
Detailed explanation-3: -Osmotic pressure is responsible for the movement of water from the root hairs to the cortical cells and then finally to the xylem vessels. It is the force required to resist the movement of water through a semi-permeable membrane down the concentration gradient.
Detailed explanation-4: -Water can get into xylem vessels by two routes-the symplast pathway and the apoplast pathway. If water travels via the symplast pathway then it travels from cell to cell through the cytoplasm. Neighbouring cells are connected by small channels in the cell walls called plasmodesmata.
Detailed explanation-5: -They are able to maintain water in the liquid phase up to their total height by maintaining a column of water in small hollow tubes using root pressure, capillary action and the cohesive force of water. XYLEM. Water travels from a tree’s roots to its canopy by way of this conductive tissue.