Question

Respiration occurs in annelids by:

• A. Skin
• B. Parapodia
• C. Both of A and B
• D. Nephridia

Answer 1

The correct option is C Both of A and B

• Respiration in annelids occurs primarily through their moist skin, for example in earthworms. Although certain species have evolved specialized gills or use paired projections called parapodia in gas exchange.
• Parapodia are paired, unjointed lateral appendages found in polychaete worms (bristle worms), which are often fleshy (especially in marine polychaetes) and used for locomotion and respiration, for example in Nereis.

Hence, the correct option is C.