Question

3) Decide which one of the
following Pairs is correct​

Answer 1

Answer:

Phylum Mollusca is the second largest animal phylum. Cephalopoda is a class of phylum Mollusca. Head and foot regions are combined and modified into a structure which has eyes and eight tentacles, hence the name cephalopod or 'head foot'. Octopus belongs to this class. It is found at the bottom of the sea. It kills its prey with poisonous saliva. The shell is absent. Octopus ejects an inky fluid in water and forms a screen for defence from its enemies.