Unit 4 Quiz Review

Platyhelminthes are more closely related which the following phlyum

• Porifera

• Cnidaria

• Mollusca

• Annelida

Cnidarians and Platyhelminthes share which of the following trait?

• radial symmetry

• bilateral symmetry

• digestive system

• form of locomotion

Annelids are

• flatworms

• segmented worms

• roundworms

• the phylum which includes slugs

Platyhelminthes are

• flatworms

• segmented worms

• roundworms

• the phylum which includes slugs

Mollusks are

• flatworms

• segmented worms

• round worms

• the phylum which includes slugs

Nematodes are

• flatworms

• segmented worms

• roundworms

• the phylum which includes slugs

Mollusks are composed of which three Class groups?

• 1. Gastropods

• Cnidarians

• Bivalves

• Cephalopods

What is are common characteristic of Mollusks?

• open circulatory systems

• developmental stages

• body is divided into two regions: head-foot adaptation and the visceral mass

• bilateral symmetry

What is one new evolutionary adaptation of Platyhelminthes?

• respiratory sytem

• coelomates

  (body cavity)

• closed circulatory system

  (blood and blood vessels)

• cephalization

  (simple brains)

What is one new evolutionary adaptation of Annelids?

• respiratory sytem

• coelomates

  (body cavity)

• closed circulatory system

  (blood and blood vessels)

• cephalization

  (simple brains)