Q. Alternation of generations (metagenesis), in which polyps produce medusae asexually and medusae form polyps sexually, is seen in:
A) Hydra
B) Obelia
C) Aurelia
D) Adamsia
Explanation
Obelia exists in both polyp and medusa forms. Hydra and Adamsia exist only as polyps, while Aurelia (jellyfish) exists as a medusa.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.