Question

An animal that does not perform locomotion is

• A. Euglena
• B. Nereis
• C. Sycon
• D. Sepia

Answer 1

Answer: (C)

Sycon

A. Euglena belongs to group Euglenophyta under kingdom Protista. Euglena is a motile organism and moves with the help of flagella.

B. Nereis belongs to phylum Annelida and has parapodia for locomotion.

C. Sycon is a sponge that belongs to phylum Porifera. Sponges are sessile as they are attached to a substratum.

D. Sepia, also known as cuttlefish belongs to phylum Mollusca. It has fins for locomotion.

Hence, Sycon does not perform locomotion.

So, the correct answer is 'Sycon'.