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?

Question

Accepted Answer

C4. C4 plants use a CO2-concentrating mechanism that suppresses photorespiration, so they perform well at high temperatures and lose less water per carbon fixed. This also makes nitrogen use more efficient because less Rubisco is needed.

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?

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