I WONDER - What Animal Group Do Mollusks Belong To?

Mollusks are invertebrates with soft bodies, often possessing a radular, a tongue-like organ with teeth. They are categorized into three main groups: gastropods, bivalvia, and cephalopods. Gastropods include snails and slugs, with snails having spiral shells and slugs lacking shells. Bivalvia mollusks, such as clams, oysters, and mussels, have two shells. Cephalopods, like squids and octopi, live in saltwater and have no shells.

What is a unique feature of many mollusks that helps them feed?

• A radula

• A hard shell

• Tentacles

• A backbone

Which group of mollusks is known for its diversity and includes both snails and slugs?

• Gastropodder

• Cephalopoda

• Arthropoda

• Bivalvia

What distinguishes slugs from most snails in the Gastropodder group?

• They live in water

• They have two shells

• They have a radula

• They lack a shell

Which group of mollusks includes creatures with two shells?

• Cephalopoda

• Gastropodder

• Bivalvia

• Arthropoda

What is a characteristic of the Cephalopoda group?

• They have a spiral shell

• They live in freshwater

• They have no shells

• They have a backbone