Q. Lateral appendages called parapodia, which help in swimming, are present in:
A) Pheretima
B) Nereis
C) Hirudinaria
D) Ascaris
Explanation
Aquatic annelids like Nereis possess parapodia. Earthworm (Pheretima) and leech (Hirudinaria) lack them, and Ascaris is not an annelid.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.