Worms - Platyhelminthes and Nematoda

What structures do tapeworms have for attaching themselves to the intestinal lining of their host? (multiple answers possible)

• suckers

• pharynx

• hooks

• silk glands

Which structure is used by a planarian for feeding?

• cilia

• scolex

• sucker disc

• pharynx

This type of flatworm (pictured) is free-living in freshwater and marine environments.

• sheep liver fluke

• planarian

• hookworm

• tapeworm

How does a tapeworm get its nutrition?

• Through its mouth and complex digestive system.

• Absorbs food in the host's intestine directly through its skin.

What type of symmetry do all worms have?

• bilateral

• radial

• asymmetry

• spherical

The image shows which type of worm?

• fluke

• flatworm

• roundworm

• segmented worm

Which of the following are true of worms in Phylum Nematoda? (multiple answers possible)

• they are very flat

• they have a two-way, incomplete digestive system

• they are hermaphrodites

• they move with thrashing, snake-like movements

A single organism that has both testes and ovaries is called _____________________ .

• hermaphroditic

• dioecious

• heterotrophic

• homozygous

The extendable throat of a planarian is the _____________ .

• intestine

• acetabulum

• pharynx

• gizzard

To which phylum does a planarian belong?

• Cnidaria

• Platyhelminthes

• Nematoda

• Annelida