Question

Which of the following traits is not common for sea anemone and jellyfish?

• A. A medusa as the dominant stage in the life cycle
• B. Possession of a gastro vascular cavity
• C. Sexual reproduction
• D. Nematocysts present on the tentacles

Answer 1

The correct option is A A medusa as the dominant stage in the life cycle

Medusa and polyp are the stages in the life cycle of Cnidarians. Medusa is the sexual stage free floating form and polyp is the sessile, asexual form. The jellyfish have both a medusa and a polyp stage in their life cycle, but the sea anemones do not have the medusa stage and spend the life cycle as polyps.