Explain how the world would be different if C4 plants and CAM plants had not evolved?

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  • 1 decade ago
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    Many major crop plants use C4 photosynthesis including Maize, Amaranth and Sorghum. Cacti are a plant group employing CAM that springs to mind. These types of photosynthesis are more efficient in terms of carbon fixation and CAM is more efficient in terms of water use. Basically, they give plants using them an edge in difficult environments. If C4 had never evolved, Native American's might not have been able to grow corn as successfully in harsh environments, it might not have been domesticated and we might not have it as a crop plant today.

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