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प्रश्न
Briefly explain, how transpiration helps in upward conduction of water in plants?
उत्तर
Transpiration helps in the upward conduction of water in plants through the transpiration pull mechanism. As water evaporates from the stomata of leaves, it creates a negative pressure (suction force) in the leaf cells. This draws water upward from the xylem vessels in the stem and roots. The cohesive and adhesive properties of water molecules help maintain a continuous column of water, allowing it to move against gravity from the roots to the leaves. This process is essential for nutrient transport and maintaining plant hydration.
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संबंधित प्रश्न
The loss of water in the form of water vapour through stomata on leaves is known as ___________.
Which of the following helps in the upward movement of water and dissolved minerals from the roots to the leaves through the stem?
Under what conditions do plant transpire most slowly?
Name the process by which water loss takes place through the leaves.
What type of transpiration is possible in the xerophyte Opuntia?
Stomata of a plant open due to ______.
Boojho wanted to test the presence of starch in leaves. He performed the following steps.
- He took a leaf and boiled it in water.
- He placed the leaf in a petri dish and poured some iodine over it.
He did not get the expected result. Which step did he miss? Explain.
Water molecule is very polar. Polar end of molecule attracts opposite charges on another water molecule (acts like magnet). How will you explain this property of water with reference to upward movement of water? Comment on the upward movement of water given the intermolecular hydrogen bonding in water.
The process of evaporative loss of water from the aerial parts of a plant is ______.
