Animal Navigation System
Listen to part of a lecture in an animal behavior class.
- What is the lecture mainly about?
- A. The structure of the blind mole rats’ underground tunnel system.
- B. How blind mole rates find their way back to their nests.
- C. Whether some animals use Earth’s magnetic field for navigation.
- D. Whether blind mole rats have more than one navigation system.
- Why does the professor mention tree roots and rocks?
- A. To emphasize the blind mole rat’s need for two navigation systems.
- B. To explain one reason why blind mole rats get lost.
- C. To give examples of landmarks used by the blind mole rat.
- D. To describe the materials the blind mole rat uses to build its nest.
- In discussing the experiment, why does the professor refer to a generic habitat?
- A. To prevent a misunderstanding about blind mole rats’ tunnel systems.
- B. To indicate how the researchers found the animals for the experiment.
- C. To describe similarities between blind mole rats’ natural habitat and those of other animals.
- D. To emphasize the importance of habitat design to the success of the experiment.
- What did the research team modify in the second part of their experiment?
- A. They removed the food from the habitat.
- B. They increased the distance between the nest and the food source.
- C. They changed the magnetic field around the habitat.
- D. They shifted the location of obstacles in the tunnels.
- According to the professor, what factor governs which navigation system the blind mole rat uses in a given situation?
- A. The distance traveled.
- B. The direction of travel.
- C. The complexity of the tunnel system.
- D. The presence or absence of landmarks.
- What does the professor imply when she explains why blind mole rats use two navigation systems?
- A. One system is more accurate than the other for long trips.
- B. One system takes more time to use than the other one does.
- C. Individual blind mole rats have a preference for on system or the other.
- D. Animals usually do not rely on only one navigation system for long trips.
B C D C D A