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Photosynthesis

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  1. A process that makes important difference between C3 and C4 plants is :
    1. Transpiration
    2. Glycolysis
    3. Photosynthesis
    4. Photorespiration
Correct Option: D

Photorespiration is absent is C4 plants. Photorespiration does not produce energy or reducing power. Rather, it consumes energy. Further, it undoes the work of photosynthesis. There is 25% loss of fixed CO2. Therefore, photorespiration is a highly wasteful process. This happens only in case of C3 plants.


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