Question

Solenocytes and nephridia are respectively found in

• A. Mollusca and Echinodermata
• B. Cnidaria and Mollusca
• C. Annelids and Nematoda
• D. Platyhelminthes and annelids

Answer 1

The correct option is D

Platyhelminthes and annelids

The correct option is D.

Explanation of the correct option:

1. Flatworms are also known as Platyhelminthes.
2. Solenocytes are found in flatworms.
3. These are thin, long flagellar cells that help expel nitrogenous waste.
4. The flame cells, which are specialized flatworm cells with cilia-like structures and beat continually to eliminate nitrogenous wastes
5. Annelids have a winding tubular excretory structure known as the nephridia.

Final Answer: Solenocytes and nephridia are found in Platyhelminthes and Annelids respectively.