Unit 5: Flatworms & Roundworms

Flatworms added ALL of the following the animal kingdom, except for ______________

• a third tissue layer

• a head and brain

• a separate mouth and anus

• eyespots for detecting light

Tags

NGSS.MS-LS4-2

What is the benefit of flatworms being flat?

• Easier to hide from predators

• Helps food and oxygen reach all body parts

• Lowest energy form of movement

• Allows them to stick to the ocean floor

What is the source behind the flatworm superpower of regeneration?

• Stem Cells

• An experimental healing factor given to them by Weapon X

• Rapid mitosis rates

• It easy to regrow such a simple body

Roundworms are officially known as...

• Nematoda

• Platyhelminthes

• Annelida

• Arthropoda

Select the TWO new features that Roundworms brought to the animal kingdom

• Sexual dimorphism (different male and female forms)

• First body cavity (pseudocoelom)

• Radial symmetry (circular symmetry in all directions)

• The first animals to be parasites

Tags

NGSS.MS-LS4-2

Platyhelminthes are the animal group that are more commonly called

• Flatworms

• Roundworms

• Segmented worms

• This term encompasses all worm types

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

• Trichinosis

• Planarian

• Schistosomiasis

• Tapeworm

This type of parasitic flatworm lives inside the intestines after it is consumed in undercooked meats.

• Trichinosis

• Planarian

• Schistosomiasis

• Tapeworm

This type of parasitic roundworm uses a water snail as it's intermediate host.

• Trichinosis

• Planarian

• Schistosomiasis

• Tapeworm

Tags

NGSS.MS-LS2-2

This type of parasitic roundworm is contracted after consuming undercooked pork products.

• Trichinosis

• Planarian

• Schistosomiasis

• Tapeworm