Question

Which among the following is incorrect about Cnidarians?

(a) They are also called as coelenterates which means they are fully bellied

(b) The name Cnidaria is due to presence of stinging capsules called cnidoblasts on the surface of their tentacles

(c) Endodermal cells contain muscle and nerve cells that help in their mobility

(d) Hypostome helps in ingestion and egestion

I got this question in an internship interview.

I want to ask this question from Classification of Animal Kingdom into Different Phylum-1 topic in chapter Animal Kingdom of Biology – Class 11

Answer 1

Right option is (c) Endodermal cells contain muscle and nerve cells that help in their mobility

For explanation: Cnidarians are also called coelenterates which mean that they are fully-bellied. The name Cnidaria is due to presence of stinging capsules called cnidoblasts on their surface of their tentacles. Ectodermal cells contain muscle and nerve cells that help in their mobility. Hypostome helps in ingestion and egestion.