Which phase of photosynthesis light or dark reaction is called biosynthetic phase?

Explanation

**Step-by-Step Solution:**

1. **Understanding Photosynthesis**: Photosynthesis is the process by which green plants convert light energy into chemical energy, producing food in the form of glucose. It occurs in two main phases: the light reactions and the dark reactions.

2. **Identifying the Phases**:
- The **light reactions** (also known as the photochemical phase) occur in the presence of light. During this phase, light energy is absorbed by chlorophyll and converted into chemical energy in the form of ATP and NADPH.
- The **dark reactions** (also known as the biosynthetic phase) do not require light directly. Instead, they use the ATP and NADPH produced in the light reactions to synthesize glucose from carbon dioxide.

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