Which one is correct combination

Options

A. Haemoglobic-muscle contraction
B. Sertoli cells-sperm nutrition
C. Rods and cones-auditor reception
D. Cochlea-eye.

Answer

To determine the correct combination from the options provided, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Analyze the First Option: Hemoglobin and Muscle Contraction**
- Hemoglobin is a protein found in red blood cells (RBCs).
- Its primary function is to carry oxygen throughout the body and give blood its red color.
- Hemoglobin does not play a role in muscle contraction.
- **Conclusion**: This combination is **incorrect**.

2. **Analyze the Second Option: Sertoli Cells and Muscular Nutrition**
- Sertoli cells are also known as nurse cells.
- They provide nutrition to developing sperm in the seminiferous tubules.
- They are activated by the FSH hormone.
- **Conclusion**: This combination is **correct**.

3. **Analyze the Third Option: Rods and Cones and Auditory Reception**
- Rods and cones are photoreceptors located in the retina of the eye.
- Rods are responsible for vision in low light, while cones are responsible for color and vision in bright light.
- They are not involved in auditory reception.
- **Conclusion**: This combination is **incorrect**.

4. **Analyze the Fourth Option: Cochlea and Anus**
- The cochlea is a spiral-shaped structure in the inner ear.
- It plays a crucial role in hearing.
- The anus is part of the digestive system and has no relation to the cochlea.
- **Conclusion**: This combination is **incorrect**.

### Final Conclusion:
The only correct combination among the options is **Option 2: Sertoli Cells and Muscular Nutrition**.

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