91. Name two green house crops. What is the type of these plants and why are they used in the green houses?
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92. Describe Priestley’s experiment.
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93.Why a plant cannot survive for long time at compensation point ?
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94.What does the chemiosmotic hypothesis state?
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95.Name the products of light reaction and where they are used ?
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96.By looking at a plant externally can you tell whether a plant is C3 or C4? Why and how?
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97.By looking at which internal structure of a plant can you tell whether a plant is C3 or C4? Explain.
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98.Even though a very few cells in a C4 plant carry out the biosynthetic – Calvin pathway, yet they are highly productive. Can you discuss why?
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Short Answer Type
99.RuBisCo is an enzyme that acts both as a carboxylase and oxygenase. Why do you think RuBisCo carries out more carboxylation in C4 plants?
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100.Suppose there were plants that had a high concentration of Chlorophyll-b, but lacked chlorophyll-a, would it carry out photosynthesis? Then why do plants have chlorophyll-b and other accessory pigments?
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