Neurons is sponges are

Options

A. unipolar
B. bipolar
C. multipolar
D. absent

Explanation

**Step-by-Step Solution:**

1. **Understanding Neurons**: Neurons are specialized cells that transmit nerve impulses. They are the basic building blocks of the nervous system and are responsible for carrying signals throughout the body.

2. **Identifying the Organism**: The question specifically mentions sponges, which belong to the phylum Porifera.

3. **Characteristics of Sponges**: Sponges are simple organisms that lack true tissues and organs. They are primarily aquatic and are known for their porous bodies.

4. **Nervous System in Sponges**: It is important to note that sponges do not possess a nervous system. This means they do not have neurons or nerve cells.

5. **Analyzing the Options**: The options provided include:
- A) Unipolar
- B) Bipolar
- C) Multipolar
- D) Absent

Since sponges do not have any neurons, the correct option is D) Absent.

6. **Conclusion**: Therefore, the neurons in sponges are absent since sponges do not have a nervous system.

**Final Answer**: The neurons in sponges are absent.

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