Question

Which of the following statements regarding coelenterates are wrong?
I. Cnidocytes are present on the tentacles and on the body
II. They are diploblastic and have cellular level of organisation
III. Polyp forms are free-swimming
IV. They exhibit metagenesis
V. Polyps produce medusae sexually and medusae form polyps asexually

• A. II and IV only
• B. III and V only
• C. I, II and III only
• D. II, III and V only

Answer 1

The correct option is D II, III and V only

Coelenterates are aquatic diploblastic organisms with tissue level of organisation. Some coelenterates exhibit alternation of generation or metagenesis between asexual polyp and sexual medusa forms. Polyps are sessile while medusa is motile.
Polyps produce medusae asexually while medusae form polyp sexually.