C4 Plant

C4 Plant The vegetation shown above is crabgrass, which is an example of a C4 Plant. C4 plants have evolved to prevent photorespiration, which contrasts to C3 plants. When the weather is hot and dry, a C4 plant will close its stomata which reduces the amount of water wasted. While the stomata is closed, the C4 plants adaptations allow it to continue to create sugars through photosynthesis using an enzyme unique to C4 plants which fixes carbon into a four-carbon compound. This allows the CO2 concentration to remain high enough for the Calvin cycle to make sugars while avoiding photorespiration.

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