Which of the following animals is NOT an example of Mollusca?

Correct option is D

• Scolopendra is not a member of the Mollusca group. It is a centipede, which belongs to the phylum Arthropoda.

Mollusca includes animals like:

• Unio (a type of clam)
• Octopus
• Snail

• (a) Unio:

Unio is a type of bivalve mollusk (commonly known as a clam). It lives in freshwater and has two hinged shells that protect its soft body. Bivalves are a sub-group of mollusks, and Unio is a classic example of this group.

• (b) Octopus:

The Octopus is a cephalopod mollusk. It is known for its intelligence, eight arms, and ability to change color and texture. Cephalopods, including octopuses, squids, and cuttlefish, are highly advanced mollusks with well-developed nervous systems and specialized features.

• (c) Snail:

Snails are also part of the Mollusca phylum. They belong to the class Gastropoda. Snails have a characteristic coiled shell (though some species are without shells) and a muscular foot for movement. They can live in both terrestrial and aquatic environments.

• Mollusca is a diverse phylum that includes gastropods, bivalves, cephalopods, and others. These animals are characterized by soft bodies, and many have shells made of calcium carbonate.