Calvin cycle is

Options

A. Dpendent upon light
B. Independent of light
C. Supported by light
D. Hindered by light.

Answer

**Step-by-Step Solution:**

1. **Understanding the Calvin Cycle**: The Calvin cycle, also known as the dark reaction or light-independent reaction, is a crucial part of photosynthesis where carbon dioxide is converted into glucose.

2. **Light Dependency**: The question asks about the light dependency of the Calvin cycle. It is important to note that the Calvin cycle does not directly require light to occur.

3. **Dark Reaction**: The Calvin cycle is classified as a dark reaction, meaning it can take place in the absence of light. This distinguishes it from the light-dependent reactions of photosynthesis, which require light to produce ATP and NADPH.

4. **Role of ATP and NADPH**: Although the Calvin cycle does not need light, it relies on the ATP and NADPH produced during the light-dependent reactions. These molecules provide the energy and reducing power necessary for the synthesis of carbohydrates.

5. **Conclusion**: Based on the above points, we conclude that the Calvin cycle is independent of light.

**Final Answer**: The Calvin cycle is independent of light.

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