Rate of photosynthesis is maximum at

Options

A. Equator
B. Tropic of Cancer
C. Tropic of Capricorn
D. Arctic circle.

Answer

To determine where the rate of photosynthesis is maximum, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Photosynthesis**:
- Photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into glucose and oxygen. The rate of photosynthesis is influenced by several factors, including light intensity, temperature, and carbon dioxide concentration.

2. **Identify the Factors Affecting Photosynthesis**:
- The primary factor affecting the rate of photosynthesis is light intensity. The more intense the light, the higher the rate of photosynthesis, up to a certain point.

3. **Consider the Geographic Locations**:
- The question provides four options:
- Equator
- Tropic of Cancer
- Tropic of Capricorn
- Arctic Circle

4. **Analyze Light Intensity at Different Locations**:
- At the equator, sunlight is more direct and intense throughout the year compared to other latitudes. This is because the equator receives sunlight at a perpendicular angle, leading to higher light intensity.
- As you move towards the poles (like the Arctic Circle), the angle of sunlight becomes more oblique, resulting in lower light intensity and consequently a lower rate of photosynthesis.

5. **Conclusion**:
- Since the rate of photosynthesis is directly related to light intensity, the maximum rate of photosynthesis occurs at the equator where light intensity is highest.

### Final Answer:
The rate of photosynthesis is maximum at the **Equator**.

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