Phylum Mollusca

Front

What is Phylum Mollusca?

Back

Phylum Mollusca is a diverse group of invertebrate animals that includes snails, clams, squids, and octopuses, characterized by a soft body, often protected by a hard shell.

Front

What are the main classes of Mollusca?

Back

The main classes of Mollusca include Gastropoda (snails and slugs), Bivalvia (clams and oysters), and Cephalopoda (squids and octopuses).

Front

What is the function of the radula in Mollusca?

Back

The radula is a toothed, chitinous ribbon used by many mollusks to scrape food off surfaces, functioning like a tongue.

Front

How do bivalves feed?

Back

Bivalves feed by filter feeding, using their gills to trap food particles from the water.

Front

What is the role of the visceral mass in mollusks?

Back

The visceral mass holds the internal organs of the mollusk.

Front

What is the significance of the mantle in Mollusca?

Back

The mantle is a significant part of the mollusk's anatomy that secretes the shell and covers the visceral mass.

Front

Describe the nervous system of Cephalopods.

Back

Cephalopods have the most advanced nervous system among mollusks, featuring a large brain and complex behaviors.

Front

What is the developmental pathway of a marine clam?

Back

The correct developmental pathway for a marine clam is fertilized egg -> trocophore -> veliger -> juvenile -> adult.

Front

What are the main characteristics of Gastropods?

Back

Gastropods are characterized by a single, usually spiraled shell and a distinct head with tentacles.

Front

How do mollusks reproduce?

Back

Mollusks can reproduce sexually, with most having separate sexes, while some are hermaphroditic.