Which of the following gas is given out during photosynthesis ?

Options

A. nitrogen
B. carbon dioxide
C. oxygen
D. water vapour

Answer

**Step-by-Step Solution:**

1. **Understanding Photosynthesis**: Photosynthesis is the process by which plants make their own food using sunlight, carbon dioxide, and water. This process occurs in the presence of light.

2. **Identifying Reactants**: The main reactants (inputs) for photosynthesis are carbon dioxide (CO2) and water (H2O).

3. **Recognizing the Role of Light**: Light is essential for photosynthesis as it provides the energy needed for the reaction to occur.

4. **Determining the Products**: The products of photosynthesis are glucose (a type of carbohydrate) and oxygen (O2).

5. **Identifying the Gas Released**: During the process of photosynthesis, oxygen is released as a byproduct.

6. **Conclusion**: Therefore, the gas that is given out during photosynthesis is oxygen.

**Final Answer**: The gas given out during photosynthesis is **Oxygen**.

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