The coloured part of the eye which controls the amount of light of light entering the eye is a modified part of the

Options

A. Sclerotic and choroid
B. retina
C. Choroid
D. Choroid and retina

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the colored part of the eye that controls the amount of light entering it.

2. **Identifying the Parts of the Eye**: We need to consider the different parts of the eye mentioned in the options:
- **Sclera**: This is the white outer layer of the eyeball and provides structure and protection. It does not control light entry.
- **Choroid**: This is a vascular layer between the retina and the sclera. It contains blood vessels and is involved in nourishing the eye. It also plays a role in controlling light entry.
- **Retina**: This is the innermost layer of the eye that contains photoreceptor cells. It is responsible for converting light into neural signals but does not control the amount of light entering the eye.

3. **Analyzing the Options**:
- The **sclera** does not modify light entry.
- The **retina** is involved in vision but does not regulate light.
- The **choroid**, on the other hand, is responsible for controlling the amount of light that enters the eye due to its ability to modify its structure.

4. **Conclusion**: Based on the analysis, the colored part of the eye that controls the amount of light entering is the **choroid**.

**Final Answer**: The colored part of the eye which controls the amount of light entering the eye is a modified part of the **choroid**.

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