Question

Which one of the following have ciliated crown, the corona, that gives impression of rotating wheel?

• A. Pseudocoelomate organisms
• B. Members of minor phyla
• C. Rotifers
• D. All of the above

Answer 1

The correct option is D All of the above

Rotifera is a phylum of predominantly free-living, microscopic, aquatic Each rotifer is a pseudocoelomate and has a head bearing a crown of cilia, the corona, at the anterior end, most rotifers feed with the aid of currents generated by the coronal cilia. The Rotifera is a minor phylum consisting of 3 classes, 200 genera and approx. 2500 species. So, the correct answer is option D.