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प्रश्न
How does transpiration help the roots absorb water and minerals from the soil?
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उत्तर
Transpiration process in plants creates a suction pressure which pulls up water from xylem of the roots to the stem and then to the leaves.
Xylem tissues are in the form of capillary tubes (tracheids and fibres) where narrower the diameter, greater will be the force. Whenever the xylem vessels lay empty, such as during the loss of water by transpiration, the water from below rises into them by a capillary force.
Due to transpirational pull more and more water molecules are pulled up due to their tendency of remaining joined (cohesion). Such pulling force created by the leaves is very important in the case of tall trees where an upward conduction of water takes place.
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संबंधित प्रश्न
Water reaches great heights in the trees because of suction pull caused by ______.
Fill in the blank:
Water is lost from the leaves by__________.
The diagram given alongside is an apparatus used to study a particular phenomenon in plants.
(i) Name the apparatus.
(ii) What is it used for?
(iii) What is the role played by the air bubble in this experiment?
(iv) Of what use is the reservoir?
Give a reason.
What happens to the movement of the air-bubble if the apparatus shown above is kept in dark.
Choose the correct answer:
More water loss in plants is the cause of wilting. This can be checked by ____________
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Moist cobalt chloride paper is blue in colour.
Identify the wrong statement and correct it.
Leaves perform the function of transpiration only.
The lower surface of leaf will have more number of stomata in a ______.
Name the structures through which Transpiration occur in a plant.
The process of evaporative loss of water from the aerial parts of a plant is ______.
