What is the common between earthworm, leech and centipede?

Options

A. These are hermaphrodite
B. These have no legs
C. These have a ventral nerve cord
D. These have Malphighian tubules

Answer

To determine what is common between the earthworm, leech, and centipede, we can analyze each of the options provided in the question.

### Step-by-Step Solution:

1. **Identify the Phylum of Each Organism**:
- Earthworm: Belongs to the phylum **Annelida**.
- Leech: Also belongs to the phylum **Annelida**.
- Centipede: Belongs to the phylum **Arthropoda**.

2. **Evaluate Option A: Hermaphrodite**:
- Hermaphrodites are organisms that have both male and female reproductive organs.
- Earthworms and leeches are hermaphroditic (bisexual), but centipedes are not.
- **Conclusion**: This option is **incorrect**.

3. **Evaluate Option B: No Legs**:
- Earthworms and leeches do not have legs.
- Centipedes have numerous legs.
- **Conclusion**: This option is **incorrect**.

4. **Evaluate Option C: Ventral Nerve Cord**:
- Both earthworms and leeches have a ventral nerve cord.
- Centipedes also possess a ventral nerve cord.
- **Conclusion**: This option is **correct**.

5. **Evaluate Option D: Malpighian Tubules**:
- Earthworms and leeches have excretory organs called **nephridia**.
- Centipedes have excretory organs known as **Malpighian tubules**.
- **Conclusion**: This option is **incorrect**.

6. **Final Conclusion**:
- The common feature among earthworms, leeches, and centipedes is that they all have a **ventral nerve cord**. Therefore, the correct answer is **Option C**.