1. What is the lecture mainly about?
- A. The California ground squirrel’s two most dangerous predators
- B. Different strategies used by California ground squirrels against predators
- C. Characteristics of the heat sensing organs of certain venomous snakes
- D. Reasons that rattlesnakes are not dangerous to a certain species of squirrel
2. What point does the professor make when she mentions the noise that squirrels make?
- A. Noise is not an effective deterrent against snakes.
- B. Communication between members of a species is as important as predator-prey communication.
- C. Most animals use such noises to discourage predators.
- D. Most predator-prey communication is well understood.
3. What trait allows adult ground squirrels to confront rattlesnakes?
- A. They can determine whether a snake is dangerous by its rattle.
- B. They have the ability to make themselves larger.
- C. They have an immunity to rattlesnake venom.
- D. They can move more quickly than rattlesnakes.
4. How did researchers determine the rattlesnakes’ reaction to tail-flagging?
- A. They used technology in a laboratory setting to simulate conditions in the wild.
- B. They observed the rattlesnakes’ behavior when they approached ground squirrels’ nests
- C. They observed interactions between rattlesnakes and ground squirrels in a laboratory setting
- D. They compared rattlesnakes’ reactions to California squirrels and other squirrel species.
5. Why is the ground squirrel’s strategy used only for against rattlesnakes?
- A. Rattlesnakes can sense heat better than gopher snakes can.
- B. Rattlesnakes are larger than gopher snakes.
- C. Gopher snakes have better vision than rattlesnakes.
- D. Gopher snakes are much less aggressive than rattlesnakes
6. According to the professor, why is tail-flagging of special interest to researchers?
- A. It is a rare case of two-way communication between a prey species and its predators.
- B. It has helped researchers understand how rattlesnakes use their heat-sensitive organs.
- C. It is a communication strategy that many species use to discourage predators.
- D. It is the first known example of an anti-predator behavior that involves a change in body temperature.