How do plants recycle carbon during photosynthesis?

The carbon in water is recycled during photosynthesis

The carbon in glucose is recycled during photosynthesis

The carbon is oxygen molecules is recycled during photosynthesis

The carbon in carbon dioxide is recycled during photosynthesis

1 answer

Plants recycle carbon during photosynthesis primarily through the carbon in carbon dioxide.

Here's how it works:

  1. Carbon Dioxide Absorption: During photosynthesis, plants take in carbon dioxide (CO₂) from the atmosphere through small openings in their leaves called stomata.

  2. Photosynthesis Process: Inside the chloroplasts of plant cells, carbon dioxide is combined with water (H₂O), which the plant absorbs through its roots. Using energy from sunlight, plants convert these raw materials into glucose (C₆H₁₂O₆) and oxygen (O₂). The overall chemical reaction can be summarized as: \[ 6 \text{CO}_2 + 6 \text{H}_2\text{O} + \text{light energy} \rightarrow \text{C}6\text{H}{12}\text{O}_6 + 6 \text{O}_2 \]

  3. Carbon in Glucose: The carbon atoms from carbon dioxide are incorporated into glucose molecules during photosynthesis. This glucose can then be used by the plant for energy, growth, and development.

  4. Recycling Process: When plants and other organisms respire, they convert glucose back into carbon dioxide, which can re-enter the atmosphere and be used again in photosynthesis, thus recycling carbon in the ecosystem.

So, the correct answer to your question is: The carbon in carbon dioxide is recycled during photosynthesis.

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