How many types of cones are present which are responsible for the colour differentiation

Options

A. 1 types
B. 7 types
C. 3 types
D. 4 types

Answer

**Step-by-Step Solution:**

1. **Understanding Cones**: Cones are photoreceptor cells located in the retina of the eye. They play a crucial role in color vision and are essential for seeing in bright light conditions.

2. **Types of Photoreceptor Cells**: There are two main types of photoreceptor cells in the retina: rods and cones. Rods are responsible for vision in low light (twilight vision), while cones are responsible for color differentiation and vision in bright light.

3. **Identifying the Types of Cones**: In the human eye, there are three types of cone cells. Each type is sensitive to different wavelengths of light corresponding to different colors.

4. **Color Sensitivity of Cones**: The three types of cones are:
- **S-cones**: Sensitive to short wavelengths of light (blue light).
- **M-cones**: Sensitive to medium wavelengths of light (green light).
- **L-cones**: Sensitive to long wavelengths of light (red light).

5. **Conclusion**: Therefore, the human eye has three types of cones that are responsible for color differentiation: red, green, and blue.

6. **Final Answer**: The correct answer is that there are **3 types of cones** responsible for color differentiation.

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