Molluscs, Arthropods and Equinoderms

What are the threee groups of molluscs?

• Gastropods, equinoderms and bivalves

• Gastropods, bivalves and myriapods

• Crustaceans, bivalves and cephalopods

• Gastropods, bivalvesa and cephalopods

Which charateristic is common to all molluscs?

• They are aquatic

• They have the body divided in head, visceral mass and foot

• They have a shell to protect the visceral mass

• They have the foot attached to the head

Which of this animals are filter feeders?

• Gastropods such as snails

• Cephalopods such as squids

• Bivalves such as clams

• All molluscs are filter feeders

What happen with the shell of the cephalopods?

• All cephalopods have external shell

• All cephalopods have internal shell

• Some of them have internal shell and others have external one

• Some of them have shell and others have no shell

Tags

NGSS.MS-LS4-2

Arthopods have an exoskeleton made of...

• chitin

• creatinin

• chiscritin

• chispirritin

What is moulting?

• A type of jointed appendages typical of crustaceans

• A type of myriapods

• Getting rid of the exoskeleton

• A type fo jointed appendages typical of arachnids

How many pairs of legs do crustaceans have?

• 5

• 4

• 3

• 2

An arthropod that has 3 pairs of legs is

• A crustacean

• An insect

• An arachnid

• A myriapod

An arthropod that have the body divided into head and trunk is

• A myriapod

• An arachnid

• An insect

• A crustacean

Where do usually arachnids live?

• They are aquatic

• They live in damp terrestrial areas

• They live in dry terrestrial ecosystems

• They spend most of the time in the air