Question

Which of the following animals belongs to the phylum mollusca?

• A. Devil fish
• B. Dog fish
• C. Silver fish
• D. Jelly fish

Answer 1

Answer: (A)

Devil fish

Octopus or devil fish belongs to the class Cephalopoda of molluscs. It is a marine mollusc in which head and foot are combined together. The foot is modified into a funnel and partly into 8-10 sucker-bearing arms that surround the mouth.

Dogfish is the common Indian shark called Scoliodon. It is a cartilaginous fish which occurs along the Indian coast. It is a fast swimmer, carnivorous and viviparous.

Lepisma or silverfish belongs to class Insecta of phylum Arthropoda. It is a common household pest found among books, wall papers and photo frames. It is a small, soft wingless, silvery white insect.

Aurelia or jellyfish belongs to class Scyphozoa of phylum Coelenterata. It is a cosmopolitan, floating or swimming coelenterate that occurs in coastal waters. It is a glassy, transparent, soft gelatinous, saucer-shaped free living unisexual coelenterate.

Thus, the correct answer is option A.