Unit 4 Flashcard Review

Front

Cnidarians and Platyhelminthes share which of the following trait? radial symmetry, bilateral symmetry, digestive system, form of locomotion

Back

digestive system

Front

Annelids are

Back

segmented worms

Front

Platyhelminthes are

Back

flatworms

Front

Mollusks are

Back

the phylum which includes slugs

Front

Nematodes are

Back

roundworms

Front

What is one new evolutionary adaptation of Platyhelminthes? Options: respiratory system, coelomates (body cavity), closed circulatory system (blood and blood vessels), cephalization (simple brains)

Back

cephalization (simple brains)

Front

What is one new evolutionary adaptation of Annelids? Options: respiratory system, coelomates (body cavity), closed circulatory system (blood and blood vessels), cephalization (simple brains)

Back

closed circulatory system (blood and blood vessels)

Front

What is one new evolutionary adaptation of Mollusks?

Back

coelomates (body cavity)

Front

Gastropods are Mollusks characterized by having a single shell that grows from the mantel (Ex. snails) or having no shell (Ex. slugs).

Back

a single shell that grows from the mantel (Ex. snails) or having no shell (Ex. slugs)

Front

Cephalopods are Mollusks characterized by having

Back

no shell and being highly intelligent (Ex. squids)