The graph showing rate of Photosynthesis at different wavelengths of light is called

Options

A. Absorption spectrum
B. Action spectrum
C. Both (1) and (2)
D. None of these

Answer

To answer the question "The graph showing the rate of Photosynthesis at different wavelengths of light is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question is asking for the name of a specific type of graph that depicts how the rate of photosynthesis varies with different wavelengths of light.

2. **Identifying the Graph Types**: There are two main types of graphs related to light and photosynthesis:
- **Absorption Spectrum**: This graph shows how much light of different wavelengths is absorbed by chlorophyll and other pigments involved in photosynthesis.
- **Action Spectrum**: This graph illustrates the rate of photosynthesis at different wavelengths of light, showing which wavelengths are most effective for photosynthesis.

3. **Analyzing the Graph**: The graph in question is specifically focused on the rate of photosynthesis, which means it is measuring how effective different wavelengths of light are at driving the photosynthetic process.

4. **Choosing the Correct Option**: Since the graph shows the rate of photosynthesis at different wavelengths, it aligns with the definition of an **Action Spectrum**. The absorption spectrum would not show the rate of photosynthesis but rather the absorption of light.

5. **Final Answer**: Therefore, the graph showing the rate of photosynthesis at different wavelengths of light is called the **Action Spectrum**.