Plants that are adapted to dry tropical regions have the C₄ pathway mentioned earlier. Though these plants have the C₄ oxaloacetic acid as the first CO₂ fixation product they use the C₃ pathway or the Calvin cycle as the main biosynthetic pathway. Then, in what way are they different from C₃ plants? This is a question that you may reasonably ask.
Q33. A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilisation. In which of the following physiological groups would you assign this plant? (NEET 2016 Phase 1)
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