Tag: water transport
Questions Related to water transport
J.C.Bose supported
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The ascent of sap takes place due to cohesive force.
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The ascent of sap takes place due to adhesive force.
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The ascent of sap takes place due to pulsatory activity of living cell.
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None of the above.
The movement of water in the plants is known as the ascent of the sap. This upward movement is due to the pulsatory activity of the living cell. This theory was supported by J. C. Bose. he explained that there is rhythmic form of pulse-like movement which helps the water to be transported in the upward direction.
Which of the following statements was supported by Westermaier?
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The upward conduction of water is provided by cohesive force.
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The upward conduction of water is provided by xylem parenchyma cells.
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The upward conduction of water is provided by pulsatory action of living cells.
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None of the above.
There are several vital theories which help in understanding the concept of the conduction of water by xylem. Westermaier explained the theory that the upward conduction of water is due to xylem parenchyma cells. The tracheids and the vessels act as water reservoirs. This allows the movement of the water in upward direction.
Which part helps the plant absorb water and mineral from the soil?
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Root hairs
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Roots
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Root cap
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Tap root
Tap root is a type of roots which has a major big central root and small branching. These go very deep in the soil and are very strong.
Water in plants is transported by or ascent of sap takes place through
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Cambium
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Phloem
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Xylem
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Epidermis
Ascent of sap is
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Upward movement of water in the plant.
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Downward movement of organic nutrients.
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Downward and upward movement of water in the plant.
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Redistribution of inorganic substances in the plant.
- Down to upwards movement is known as ascent and Top to downwards movement is known as descend.
- In plants sap is water and minerals.
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Ascent of sap in the xylem tissue of plants is the upward movement of water and minerals from the root to the top.
The gridling or ringing experiment to prove that the water moves through the xylem vessels was performed by
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Stocking
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Malpighi
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Molisch
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Askenasy
This experiment was introduced by Malpighi in 1675. It involves the removal of a ring of bark (girdle), that is, all tissues outside the vascular cambium. Thus, the correct answer is (B).
The transport of sap from root to top of the plant is
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Ascent of sap
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Conduction
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Transport
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Translocation
When any material movement is from down to upwards it is called as ascending movement.
Sir J.C. Bose proposed a theory of ascent of sap known as
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Pulsation theory
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Transpiration pull theory
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Relay pump theory
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Capillary force theory
Sir J.C. Bose proposed a theory of ascent of sap known as pulsation theory. The pulsation theory states that water is absorbed by the plants due to the metabolic activity of living cells which are in constant state of rythmatic pulsation. But it was not accepted as water can be passively absorbed by the roots even the cells were dead.
Transportation is helpful to plants in
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Cooling
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Loss of excess nutrients
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Upward conduction/ascent of sap
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Loss of excess water
Transportation is the process involving the transfer of materials from one place to another place.
According to the vital force theory, ascent of sap is due to active pulsation of the innermost layer of cortex. This theory was given by
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J. C. Bose
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Dixon
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Strasburger
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Sachs
According to the vital force theory, ascent of sap is due to active pulsation of the innermost layer of cortex. This theory was given by J.C Bose. The pulsation theory states that water is absorbed by the plants due to the metabolic activity of living cells which are in constant state of rythmatic pulsation. But it was not accepted as water can be passively absorbed by the roots even when the cells were dead.