How C3, C4 and CAM Plants Do Photosynthesis - …
The connection to hot and dry conditions comes from the fact that all the plants will close their stomata in hot and dry weather to conserve moisture, and the continuing fixation of carbon from the air drops the CO2 dramatically from the atmospheric concentration of nominally 380 ppm (2004 value). If the CO2 compensation point is lower on the above scale, the plant can operate in hotter and dryer conditions. The limits are placed by the fact that begins to fix oxygen rather than CO2, undoing the work of photosynthesis. C4 plants shield their rubisco from the oxygen, so can operate all the way down to essentially zero CO2 without the onset of photorespiration.
05/02/2016 · A comparison of C3, C4 and CAM plants
Photosynthesis in plants occurs in two stages.
The problem of photorespiration is overcome in by a two-stage strategy that keeps CO2 high and oxygen low in the chloroplast where the Calvin cycle operates. The class of plants called and the also have better strategies than C3 plants for the avoidance of photorespiration.
c4 and Cam Plants | Photosynthesis | Physiology
Sugarcane is a champion at photosynthesis under the right conditions and is a prime example of a C4 plant, one which uses C4 photosynthesis. Sugarcane has been recorded at 7% .