Flatworms and roundworms

Two types of unsegmented worms are the roundworms and the flatworms.

• True

• False

What phylum do flatworms belong too?

• Annelida

• Platyhelminthes

• Nematoda

What kind of symmetry do flatworms have?

• They are asymmetrical

• Radial symmetry

• Bilateral Symmetry

Most are parasites, some are free living, and the body is flat and soft.

• segmented worms
• roundworms
• flatworms
• sponges

Example of a flatworm.

• leech
• tapeworm
• trichinella
• coral

What is the phylum name for the roundworms?

• Platyhelminthes

• Nematoda

• Annelida

• Arthropoda

What is the tough, exoskeleton made of chitin on the roundworm's body?

• Scolex

• cuticle

• ganglia

• pharynx

Which group of animals is more complex?

• Cnidarians

• Flatworms

• Roundworms

• Sponges

An opening at the end of the digestive tract through which waste leaves the body

• pharynx

• anus

• cilia

• parasite

all flatworms are parasites

• True

• false