Roundworms reproduce asexually.

Some roundworms are used to control pests in a garden.

Flatworms are ______________, meaning they lack an internal body cavity.

Flame cells move water and _________ from the body of the flatworm.

Free-living flatworms reproduce _________ by regeneration.

Trichinella worms are passed to a host by eating _____________.

What is true of both flatworms and roundworms?

Which structures are only found in parasitic flatworms?

Which organ allows flatworms to excrete waste materials from their bodies?

Schistosomiasis is a disease that humans can contract from exposure to which type of flatworm?

When cattle contract a tapeworm, what have they most likely consumed?

How do humans usually contract hookworms?

How is trichinosis transmitted?

Why are certain nematodes useful in controlling animal pests?

Flatworms are ____________ because they produce both eggs and sperm.

The Rotifers are named after their _________ because it rotates to circulate food into the mouth.

Roundworms have ___________ symmetry.

A roundworm is able to move because the ______________ acts as a hydrostatic skeleton to provide support for the muscles to work against.

Infection by ___________ can be transmitted by scratching the infected area, often around the anus.