Are there other animals besides cnidarians that exhibit alternation of generations (having distinct sexual and asexual life stages)? If so, what are these animals? Further, why do so few animals have this kind of life cycle? What are the evolutionary advantages of such a life cycle, and why are cnidarians emphasized in zoology?
According to Wikiwand the heterogamy occurs also in:
- some aphids
- several rotifer species
- Daphnia (freshwater crustacean)