Unipolar neurons are present in

Options

A. central nervous system
B. peripheral nervous system
C. autonomic nervous system
D. neural system of embryo

Answer

**Step-by-Step Solution:**

1. **Understanding Unipolar Neurons:**
- Unipolar neurons are characterized by having a single pole or neurite that extends from the cell body. This means they have one axon that branches into two parts, one part receiving signals and the other transmitting them.

2. **Identifying Locations of Neurons:**
- We need to analyze the options provided:
- A) Central Nervous System
- B) Peripheral Nervous System
- C) Autonomic Nervous System
- D) Neural System of Embryo

3. **Evaluating Each Option:**
- **Option A: Central Nervous System (CNS)** - The CNS primarily contains multipolar neurons, which have multiple dendrites and one axon.
- **Option B: Peripheral Nervous System (PNS)** - The PNS also mainly consists of multipolar neurons.
- **Option C: Autonomic Nervous System** - Similar to the CNS and PNS, the autonomic nervous system is predominantly made up of multipolar neurons.
- **Option D: Neural System of Embryo** - The neural system of the embryo is known to contain unipolar neurons.

4. **Conclusion:**
- Based on the analysis, the correct answer is **Option D: Neural System of Embryo**, as this is the area where unipolar neurons are present.