How Organisms interact in ecosystems

Which of the following would be considered to be prey?

• an animal that has to hunt for its food

• an animal that is eaten by another animal

• an organism that makes it own food

• an organism that feeds on the blood of another animal

The skin of a chameleon can change colors to help it blend with its surroundings. How would this adaptation MOST likely help a chameleon survive?

• by scaring predators away from the chameleon

• by attracting prey animals to the chameleon

• by sending a signal to other chameleons

• by helping the chameleon hide from its predators

Hookworms live in the digestive system of dogs. They feed on the dog's blood. Which BEST describes the role of the dog?

• parasite

• predator

• prey

• host

The relationship between an owl and a mouse is a

• predator - prey relationship

• parasite - host relationship

Soon after germination, a young Dodder plant seedling coils around the stem of a nearby plant. The Dodder seedling grows root-like projections that penetrate the stem of the other plant and draw nutrients from the other plant. Which term BEST describes the role of the Dodder plant in this relationship?

• host

• predator

• parasite

• prey

How are animals that prey on other animals classified?

• herbivores

• carnivores

• producers

• decomposers

Dutch elm disease is a disease of elm trees caused by a fungus. The fungus lives off water and nutrients from the tree. Eventually, the tree weakens and dies. Beetles spread the fungus from infected trees. What is the relationship between the fungus and the elm tree?

• predator - prey relationship

• parasite - host relationship

Based on the table below, which BEST describes the interaction between the jaguar and the tapir?

• The jaguar is a consumer and the tapir is a producer

• The jaguar is a predator and the tapir is its prey

• The jaguar and the tapir both eat the same prey

• The tapir is a predator and the jaguar is its prey

Look at the food web below. Which term best describes the hawk?

• prey

• predator

• parasite

• producer

Organisms that must live on or inside another organism to get energy.

• predator

• parasite

• prey

• producer