Unit 3 - Worms

Which of the following phyla describes the flatworms?

• Platyhelminthes

• Nemertea

• Nematoda

• Annelida

• Sipunculida

Which of the following phyla describes the segmented worms?

• Platyhelminthes

• Nemertea

• Nematoda

• Annelida

Which worm phylum is more advanced?

• Platyhelminthes

• Annelida

Tags

NGSS.MS-LS4-2

Which type of symmetry do platyhelminthes have?

• Bilateral

• Radial

• They are asymmetrical.

Which type of symmetry do annelids have?

• Bilateral

• Radial

• They are asymmetrical.

Platyhelminthes are

• acoelomates, which means they have no internal body cavity.

• coelomates, which means they have no internal body cavity.

• acoelomates, which means they have an internal body cavity.

• coelomates, which means they have an internal body cavity.

Annelids are

• acoelomates, which means they have no internal body cavity.

• coelomates, which means they have no internal body cavity.

• acoelomates, which means they have an internal body cavity.

• coelomates, which means they have an internal body cavity.

Which type of worm is shown here? Select BOTH the phylum and the common name.

• Platyhelminthes

• Flatworm

• Annelid

• Segmented worm

• Coelomate

Which type of worm is shown here? Select BOTH the phylum and the common name.

• Platyhelminthes

• Flatworm

• Annelid

• Segmented worm

• Acoelomate

Select BOTH terms that apply to this worm.

• Acoelomate

• Coelomate

• Platyhelminthes

• Annelid