The rods and cones of the eye retinal layer are modified

Options

A. Bipolar neurons
B. Unipolar neurons
C. Multipolar neurons
D. Hairs.

Answer

**Step-by-Step Solution:**

1. **Understanding Neuron Types**:
- Neurons can be classified based on their structure into three main types: unipolar, bipolar, and multipolar.
- **Unipolar Neurons**: These have a single process that extends from the cell body, which branches into two parts. They are typically found in sensory neurons.
- **Bipolar Neurons**: These have two processes, one axon and one dendrite, extending from the cell body. They are often found in sensory organs, such as the retina of the eye.
- **Multipolar Neurons**: These have one axon and multiple dendrites. They are the most common type of neuron and are typically found in the brain and spinal cord.

2. **Identifying Rods and Cones**:
- Rods and cones are photoreceptor cells located in the retina of the eye.
- **Rods**: Responsible for vision in low light conditions (scotopic vision).
- **Cones**: Responsible for color vision and function best in bright light (photopic vision).

3. **Determining the Type of Neuron**:
- The question asks how rods and cones are classified in terms of neuron types.
- Both rods and cones have a structure that resembles bipolar neurons, as they possess one axon and one modified dendrite.

4. **Conclusion**:
- Based on the definitions and characteristics of the neuron types, rods and cones are classified as **modified bipolar neurons**.

5. **Final Answer**:
- Therefore, the correct answer is **bipolar neurons**.

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