Solutions For 9780131905429 Chapter 4 Problem 9STP

Fleas are the most common parasite found on dogs. They feed on Dog’s blood and obtain the nutrients. Thus, this association is an example of parasitism. In this association, one organism (flea) is benefiting while the other (dog) is harmed. Here, flea is the parasite and dog is the host.

In the analogy given, Flea: dog::parasite: host.

Thus, the answer is.

Flea is not a bacterium. It is not a predator as it is too small to attack the dog and to feed on it. It is neither a carnivore nor a competitor.