Question

How many of the following organisms belong to the second-largest phylum?
Apple snail, Pearl oyster, Anopheles, Culex, Aedes, Starfish, Sea urchin, Cuttlefish, Sea cucumber, Squid, Devil fish

• A. 9
• B. 8
• C. 10
• D. 5

Answer 1

Answer: (D)

The second-largest phylum is phylum Mollusca.
Apple snail, Pearl oyster, Cuttlefish, Squid, and Devil fish belong to phylum Mollusca.
Anopheles, Culex, and Aedes belong to phylum Arthropoda. Starfish, Sea Urchin, and Sea cucumber belong to phylum Echinodermata.