Biology
Which one among the following Indian scientists proposed a theory for long distance transport of water in plants ?

N.S. Parihar
J.C. Bose
P. Maheshwari
Birbal Sahni

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Biology
Plants are killed in winter by frost

because no photosynthesis takes place at such low temperature
because there is no transpiration
because of desiccation and mechanical damage to the tissues
because respiration ceases at such low temperature

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