Unipolar neuron possess  

Options

A. dendrite only
B. one axon only
C. both 1 & 2
D. none

Answer

To answer the question about unipolar neurons, let's break it down step by step:

### Step 1: Understanding Unipolar Neurons
Unipolar neurons are a type of neuron characterized by having a single process extending from the cell body. This single process typically branches into two parts: one part acts as a dendrite that receives sensory information, and the other part functions as an axon that transmits signals to the spinal cord.

### Step 2: Identifying the Structure
The key feature of unipolar neurons is that they possess one axon only. This distinguishes them from bipolar neurons, which have one axon and one dendrite, and multipolar neurons, which have multiple dendrites.

### Step 3: Analyzing the Options
Now, let's analyze the options provided in the question:
1. **Option 1: One dendrite only** - This is incorrect because unipolar neurons do not have a dendrite in the traditional sense; they have a single process that serves both functions.
2. **Option 2: One axon only** - This is correct as unipolar neurons are defined by having one axon.
3. **Option 3: Both one and two** - This is incorrect because option one is wrong.
4. **Option 4: None** - This is also incorrect since option two is correct.

### Step 4: Conclusion
Based on the analysis, the correct answer is:
**Option 2: One axon only.**