Question

Why does the Ctenophora is a minor phylum?

• A. It includes small sized animals.
• B. It includes only few genera.
• C. It does not includes animals of economic importance.
• D. It was included earlier in Cnidaria.

Answer 1

The correct option is B It includes only few genera.

Ctenophora is considered as a small phylum. The phylum contains very few genera and only about 80 species. This group includes a set of marine animals. These organisms are commonly called as comb jellies. Earlier, this phylum was placed under Coelenterata. Hatschek placed it under a separate phylum.

Thus, the correct answer is option B.