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Can you explain the answer of this question below:
Root pressure is highest when:
- A:Absorption is low and transpiration is high
- B:Transpiration is low and absorption is high
- C:Transpiration is low and absorption is also low
- D:Absorption is high and so is transpiration
The answer is b.
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Can you explain the answer of this question below:Root pressure is hig...
Root pressure, in plants, force that helps to drive fluids upward into the water-conducting vessels (xylem). It is primarily generated by osmotic pressure in the cells of the roots and can be demonstrated by exudation of fluid when the stem is cut off just aboveground. It is partially responsible for the rise of water in plants.
The root-pressure hypothesis of sap rise holds that pressures in trees are several times atmospheric pressure, not nearly enough to transport water to the top of the tallest trees. Furthermore, root pressures tend to be lowest when water loss from leaves (transpiration) is highest, exactly when trees most need water.
The lifting force generated by evaporation and transpiration of water from the leaves and the cohesive and adhesive forces of molecules in the vessels, and possibly other factors, all contribute to the rise of sap in plants.
hence, correct option is (B).
Most Upvoted Answer
Can you explain the answer of this question below:Root pressure is hig...
Root pressure, in plants, force that helps to drive fluids upward into the water-conducting vessels (xylem). It is primarily generated by osmotic pressure in the cells of the roots and can be demonstrated by exudation of fluid when the stem is cut off just above ground. It is partially responsible for the rise of water in plants.
The root-pressure hypothesis of sap rise holds that pressures in trees are several times atmospheric pressure, not nearly enough to transport water to the top of the tallest trees. Furthermore, root pressures tend to be lowest when water loss from leaves (transpiration) is highest, exactly when trees most need water.
The lifting force generated by evaporation and transpiration of water from the leaves and the cohesive and adhesive forces of molecules in the vessels, and possibly other factors, all contribute to the rise of sap in plants
The root-pressure hypothesis of sap rise holds that pressures in trees are several times atmospheric pressure, not nearly enough to transport water to the top of the tallest trees. Furthermore, root pressures tend to be lowest when water loss from leaves (transpiration) is highest, exactly when trees most need water.
The lifting force generated by evaporation and transpiration of water from the leaves and the cohesive and adhesive forces of molecules in the vessels, and possibly other factors, all contribute to the rise of sap in plants
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Can you explain the answer of this question below:Root pressure is hig...
- Root pressure, in plants, force that helps to drive fluids upward into the water-conducting vessels (xylem). It is primarily generated by osmotic pressure in the cells of the roots and can be demonstrated by exudation of fluid when the stem is cut off just above ground. It is partially responsible for the rise of water in plants.
- Root pressure is the positive pressure that develops in the roots of the plants by active absorption of nutrients from the soil. The active absorption depends on the active accumulation of solute in xylem sap.
- Root pressure in maximum when transpiration is very low and absorption is high because transpiration is the output of water from a plant, and absorption is the input of water into a plant. If the output is low and input is high, the pressure will be at its greatest.
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Can you explain the answer of this question below:Root pressure is highest when:A:Absorption is low and transpiration is highB:Transpiration is low and absorption is highC:Transpiration is low and absorption is also lowD:Absorption is high and so is transpirationThe answer is b.
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