Question

Identify the wrong match:

• A. Porifera – spicules
• B. Ctenophora – bio luminescence
• C. Mollusca – chitinous shell
• D. Annelida – nephridia

Answer 1

The correct option is C

Mollusca – chitinous shell

The body of sponges is supported by spicules or spongin fibres. Ctenophores (comb jellies) exhibit bioluminescence, which is a property by which the organisms can emit light. Annelids possess structures called nephridia which help in excretion. Members belonging to Phylum Mollusca do possess a hard exoskeleton, but it is made up of calcium carbonate and not chitin. Chitinous exoskeleton is characteristic of arthropods.