Single-celled parasites that may survive in or out of the body and feed off of dead or decaying material are:

• rickettsial.

• fungi.

• protozoal.

• bacteria.

Worms that live in the large intestine and leave football-shaped eggs in the feces are:

• hookworms.

• whipworms.

• roundworms.

• heartworms.

Worms that are spread by a mosquito and can be found in dogs, cats, and ferrets are:

• tapeworms.

• roundworms.

• heartworms.

• whipworms.

Anemia can occur with flea bites because:

• the animal scratches too much.

• the flea embeds itself into the circulatory system.

• there is a loss of blood.

• the flea enters the intestine.

Upon inspection of a fecal sample, the veterinary assistant notices eggs that are circular with dark, circular centers. She suspects they are:

• roundworms.

• hookworms.

• tapeworms.

• whipworms.

Which is true of tapeworms?

• Flatworms that have individual parts that grow

• Worms that have a whip-like shape

• Round-like worms with large segments

• Worms with a teeth-like structure

Organisms that feed off a host or infected animals are:

• parasites.

• biting insects.

• fungi.

• viruses.

Contagious particles that are spread through the environment and can only live inside a host cell are:

• bacteria.

• fungi.

• protozoa.

• viruses.

Rickettsial diseases are spread by:

• fungi.

• biting insects.

• viruses.

• bacteria.

Single-celled organisms that can be beneficial or pathogenic and cause disease are:

• viruses.

• protozoa.

• bacteria.

• fungi.