A soil sample is found to have 25% of its volume occupied by soil water. Of this, 10% is hygroscopic water and .the remaining is capillary water. What is the field capacity of this soil?
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When the concentration of the soil solutes is low, the absorption of water is |
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Which one of the followings establishes the barrier to the apoplastic movement of solutes into the vascular cylinder? |
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The direction of water in the leaflets of Cycas from midrib is |
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Study the following lists and choose the correct option.
The correct match is : |
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Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be: |
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Munch hypothesis is based on |
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The translocation of organic solutes in sieve tube members is supported by |
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Column I lists some principles, pertaining to physiology of plants. Column II lists the names of scientists who proposed the idea. Match the two columns. Identify the correct choice from those given
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Opening and closing of stomata is due to the: |
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Phenylmercuric acetate |
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