Question

Which of the following are not echinoderms?

• A. Holothuria and Antedon
• B. Asteria and Ophiothrix
• C. Limex and Neopilina
• D. Ophiothrix and Cucumaria

Answer 1

The correct option is C Limex and Neopilina

Neopilina is known as the bottom feeder. They have evolved from the monoplacophora. They have tentacles which are categorized as preoral and post oral tentacles. The shell of this organism is covered by a layer of mucus. The shell is considered to be involved in locomotion. Neopilina is the connecting link between Annelida and Mollusca. Limax maximus is very large back slug. They are gastropod and belongs to phylum Mollusca.

Thus, the correct answer is option C.