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    Photosynthesis in Higher Plants
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    Why photorespiratisn does not occur in C4 plant ?
    In C4 plants photorespiration does not occur. This is because they have a mechanism that increases the concentration of CO2 at the enzyme site and due to the kranz anatomy. The  mesophyll cells lacks RuBisCo enzyme. The malic acid from the mesophyll is broken down in the bundle sheath cells to release CO2.This results in increasing the intracellular concentration of CO2. This ensures that the RuBis O function as a carboxylase minimising the oxygenase activity.
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    What is warburg effect ?
    Warburg effect is the decrease in the rate of photosynthesis by high oxygen concentrations
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    How many turns of calvin cycle are required for making one molecule of glucose ? For this purpose how many ATP and NADPH are required?

    6 turns of the Calvin cycle are required to produce one molecule of glucose. For this - 18 ATP and 12 NADPH are required.
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    What is assimilatory power ?
    Assimilatory power is the power of plants in the form of ATP & NADPH (produce during light reactions)  to obtain food in the form of carbohydrates from the reduction of CO2 during photosynthesis.
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    Why C4 plants are more efficient?

    The C4 plants lack photorespiration thus the productivity and yields are better in these plants. Since there is no photorespiration there is no wastage of energy thus these plants are said to be more efficient.  

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