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Water potential in the leaf tissue is positive (+) during [1997]
- a)excessive transpiration
- b)low transpiration
- c)excessive absorption
- d)guttation
Correct answer is option 'D'. Can you explain this answer?
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Water potential in the leaf tissue is positive (+) during [1997]a)exce...
Pure water has maximum water potential (O). Water potential in the leaf tissue becomes greater than pure water under conditions of excessive humidity when the leaves cannot lose water by transpiration. Hence water is lost as droplets via hydathodes by the process of guttation.
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Water potential in the leaf tissue is positive (+) during [1997]a)exce...
Transpiration is the process of evaporation of water from the upper surface of the leaves.
(A)Excessive transpiration indicates the high level of water evaporated and the water potential is negative.
(B)Low transpiration indicates the low level of water evaporated and the water potential is negative.
(C)Excessive absorption indicates the entering of the molecule to bulk phase and the water potential is negative.
(D)Guttation occurs due to root pressure. It is the loss of water through leaves in the absence of photosynthesis. Due to root pressure water moves upwards and at this point, the amount of water is more in leaves than the atmosphere so water potential is positive.
So, the correct answer is 'Guttation'.
(A)Excessive transpiration indicates the high level of water evaporated and the water potential is negative.
(B)Low transpiration indicates the low level of water evaporated and the water potential is negative.
(C)Excessive absorption indicates the entering of the molecule to bulk phase and the water potential is negative.
(D)Guttation occurs due to root pressure. It is the loss of water through leaves in the absence of photosynthesis. Due to root pressure water moves upwards and at this point, the amount of water is more in leaves than the atmosphere so water potential is positive.
So, the correct answer is 'Guttation'.
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Water potential in the leaf tissue is positive (+) during [1997]a)exce...
Water Potential in Leaf Tissue during Guttation
Guttation is a process by which water droplets are exuded from the leaves of some plants. It occurs when the rate of water absorption by the roots exceeds the rate of water loss through transpiration, resulting in the accumulation of excess water in the plant.
Water potential is the measure of the tendency of water molecules to move from one place to another. It is affected by various factors such as pressure, solute concentration, and gravity. Water moves from an area of high water potential to an area of low water potential.
During guttation, the water potential in the leaf tissue becomes positive due to the accumulation of excess water in the plant. This is because the water potential of pure water is considered to be zero, and any solution with a solute concentration lower than that of pure water will have a positive water potential.
Therefore, the correct answer to the given question is option 'D' - Guttation.
Guttation is a process by which water droplets are exuded from the leaves of some plants. It occurs when the rate of water absorption by the roots exceeds the rate of water loss through transpiration, resulting in the accumulation of excess water in the plant.
Water potential is the measure of the tendency of water molecules to move from one place to another. It is affected by various factors such as pressure, solute concentration, and gravity. Water moves from an area of high water potential to an area of low water potential.
During guttation, the water potential in the leaf tissue becomes positive due to the accumulation of excess water in the plant. This is because the water potential of pure water is considered to be zero, and any solution with a solute concentration lower than that of pure water will have a positive water potential.
Therefore, the correct answer to the given question is option 'D' - Guttation.
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Water potential in the leaf tissue is positive (+) during [1997]a)excessive transpirationb)low transpirationc)excessive absorptiond)guttationCorrect answer is option 'D'. Can you explain this answer?
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