Photosynthesis is one of the type of :

Options

A. a catabolic reaction
B. an anabolic-reaction
C. an energy releasing reaction
D. none of the above

Explanation

**Step-by-Step Solution:**

1. **Understanding Photosynthesis**: Photosynthesis is a process used by plants, algae, and some bacteria to convert light energy, usually from the sun, into chemical energy in the form of glucose.

2. **Identifying the Type of Reaction**: To classify photosynthesis, we need to determine whether it is an anabolic or catabolic reaction. An anabolic reaction is one that builds larger molecules from smaller ones, while a catabolic reaction breaks down larger molecules into smaller ones.

3. **Analyzing the Photosynthesis Reaction**: The general equation for photosynthesis can be summarized as:
\[ \text{Carbon Dioxide (CO}_2\text{) + Water (H}_2\text{O) + Light Energy} \rightarrow \text{Glucose (C}_6\text{H}_{12}\text{O}_6\text{) + Oxygen (O}_2\text{)} \]
In this reaction, carbon dioxide and water are combined to produce glucose and oxygen.

4. **Conclusion**: Since photosynthesis involves the synthesis of glucose from carbon dioxide and water, it is classified as an anabolic reaction. This means that it is a process that builds or produces something (in this case, glucose).

5. **Final Answer**: Therefore, photosynthesis is one of the types of anabolic reactions.

---