The wall of the eye ball if composed of three layers. Which character is not related with eye ?
i. At the retina yellowish pirmented spot called macula lutea
ii. The ciliary body itself contines forward to form a pigment and opaque structure called the iris.
iii. The twilight (scotopic) vision and colour vision are functions of cones and the daylight (photopic) vision is the function of the rods
iv. The rods contain a purplish-red protein called the rhodopsin, which contains a derivative of vitamin-A
v. In the human eye, there are three types of cones which possess their own characteristic photo pigments that respond to red, green and yellow lights.
vi. Photoreceptor cells are not present in blind spot
vii. The fovea is a thinned-out portion of the retina where only the rod cells are densely packed

Options

A. i, ii, v and vii
B. ii, iii, iv and vi
C. iii, v and vii
D. None of these

Answer

To determine which character is not related to the eye from the provided statements, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement i**: "At the retina, yellowish pigmented spot called macula lutea."
- **Analysis**: This statement is correct. The macula lutea is indeed a yellowish spot on the retina that is responsible for central vision.
- **Conclusion**: Related to the eye.

2. **Statement ii**: "The ciliary body itself continues forward to form a pigment and opaque structure called the iris."
- **Analysis**: This statement is also correct. The ciliary body is a part of the eye that helps to control the shape of the lens and continues to form the iris.
- **Conclusion**: Related to the eye.

3. **Statement iii**: "The twilight (scotopic) vision and colour vision are functions of cones and the daylight (photopic) vision is the function of the rods."
- **Analysis**: This statement is incorrect. Twilight vision (scotopic vision) is primarily the function of rods, while color vision is the function of cones. Daylight (photopic) vision is also primarily the function of cones.
- **Conclusion**: Not related to the eye.

4. **Statement iv**: "The rods contain a purplish-red protein called rhodopsin, which contains a derivative of vitamin A."
- **Analysis**: This statement is correct. Rods do contain rhodopsin, which is essential for low-light vision and is derived from vitamin A.
- **Conclusion**: Related to the eye.

5. **Statement v**: "In the human eye, there are three types of cones which possess their own characteristic photo pigments that respond to red, green and yellow lights."
- **Analysis**: This statement is incorrect. The three types of cones respond to red, green, and blue light, not yellow.
- **Conclusion**: Not related to the eye.

6. **Statement vi**: "Photoreceptor cells are not present in the blind spot."
- **Analysis**: This statement is correct. The blind spot is an area on the retina where there are no photoreceptors.
- **Conclusion**: Related to the eye.

7. **Statement vii**: "The fovea is a thinned-out portion of the retina where only the rod cells are densely packed."
- **Analysis**: This statement is incorrect. The fovea is actually the area of the retina with the highest concentration of cone cells, not rod cells.
- **Conclusion**: Not related to the eye.

### Final Answer:
The statements that are not related to the eye are:
- Statement iii: "The twilight (scotopic) vision and colour vision are functions of cones and the daylight (photopic) vision is the function of the rods."
- Statement v: "In the human eye, there are three types of cones which possess their own characteristic photo pigments that respond to red, green and yellow lights."
- Statement vii: "The fovea is a thinned-out portion of the retina where only the rod cells are densely packed."

Thus, the correct answer to the question is that statements iii, v, and vii are not related to the eye.