Solution:
Cnidarians like Obelia exhibit metagenesis (alternation of polyp and medusa generations). Polyps produce medusae asexually and medusae form the polyps sexually.
Metagenesis is exhibited by
Cnidarians like Obelia exhibit metagenesis (alternation of polyp and medusa generations). Polyps produce medusae asexually and medusae form the polyps sexually.