Tag: Photorespiration

Though C4 plants represent only about 3% of Earth's plant species, they account for approximately 23% of terrestrial carbon fixation, showcasing the remarkable efficiency of what is the C4 metabolism in warm, sunny environments. This specialized photosynthetic process is a key adaptation for survival in challenging climates, providing a significant competitive advantage over C3 plants.

Approximately 85% of all plant species are classified as C3 plants, a category that includes many of the world's most vital food crops, such as wheat, rice, and soybeans. These C3 foods are distinguished by a specific photosynthetic pathway, which forms a three-carbon compound during the initial stage of carbon fixation. Understanding this fundamental biological difference is key to appreciating how plants produce the food we eat.