Photosynthesis is

Options

A. an exothermic process
B. an endothermic process
C. a neutral process
D. a thermostatic process

Answer

**Step-by-Step Text Solution:**

1. **Definition of Photosynthesis**: Photosynthesis is a process used by green plants to convert carbon dioxide and water into food. This process requires sunlight as an energy source.

2. **Components Involved**: The main components involved in photosynthesis are:
- Carbon Dioxide (CO2)
- Water (H2O)
- Sunlight (energy)

3. **Energy Requirement**: Photosynthesis is classified as an endothermic process. This means that it absorbs energy from sunlight rather than releasing it.

4. **Understanding Endothermic Process**: In an endothermic process, energy is taken in from the surroundings. In contrast, an exothermic process releases energy.

5. **Elimination of Incorrect Options**:
- **Exothermic Process**: Incorrect because this process releases energy, while photosynthesis absorbs energy.
- **Neutral Process**: Incorrect as it does not apply to photosynthesis; it refers to demographic rates in ecology.
- **Thermostatic Process**: Incorrect because it relates to maintaining a consistent temperature, which is not relevant to photosynthesis.

6. **Conclusion**: The correct classification of photosynthesis is that it is an endothermic process.