Which of the following is the most accepted theory for movement of water through plants?
Passive transport
Capillarity
Cohesion theory
Root pressure
Additional Questions
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Assertion:When dried seeds of pea are placed in a tin and water added up to their upper level and then a lid is put lightly over it. Within an hour, the lid will be blown off. Reason: Due to rapid cell division in pea seeds. |
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Attraction of water molecules to polar surfaces is known as |
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Which of the following is not a purpose of transpiration? |
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When the conditions are dry, a grass leaf curls inward to minimize water loss due to presence of |
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Guard cells help in |
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Which one of the following denotes the water potential of the mesophyll cell in wilted condition? |
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Identify the correct relationship with reference to water potential of a plant cell. |
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The values osmotic potential π and pressure potential ρ of cells A, B, C and D are given below:
Identify the correct sequence that shows the path of movement of water from among the following: |
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Steroid hormones easily pass through the plasma membrane by simple diffusion because they |
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Assertion (A): K+ ion accumulation found in Nitella depends on its respiratory activity. Reason (R): Absorption of all ions in plants completely depends on the usage of metabolic energy. The correct answer is |
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