Similarity between septal nephridia ad Malpighian tubule is that

Options

A. both excrete urea
B. both open in body cavity
C. both leave exretory products in alimentary canal
D. none

Answer

To find the similarity between septal nephridia and Malpighian tubules, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organs**:
- Septal nephridia are excretory organs found in earthworms.
- Malpighian tubules are excretory organs found in cockroaches and other insects.

2. **Understand Their Function**:
- Both septal nephridia and Malpighian tubules are involved in the excretion of waste products from the body.

3. **Excretory Products**:
- Septal nephridia primarily excrete urea as a waste product.
- Malpighian tubules also excrete urea, although they can also excrete other nitrogenous wastes.

4. **Compare Their Openings**:
- Septal nephridia open into the body cavity.
- Malpighian tubules open into the alimentary canal.

5. **Conclusion**:
- The similarity between septal nephridia and Malpighian tubules is that **both excrete urea**.

### Final Answer:
The similarity between septal nephridia and Malpighian tubules is that **both excrete urea**.

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