海洋生物学 TPO31-L3 Decline Of Coral Reefs

TPO31-L3

Decline Of Coral Reefs

Listen to part of a lecture in a Marine Biology class.

 



  1. What is the lecture mainly about?
  • A. Reasons CoT starfish are attracted to coral reefs
  • B. Possible causes of change in the CoT starfish population
  • C. Evidence that coral decline may not be related to CoT starfish
  • D. Proven ways to effectively control the CoT starfish population

 

  1. According to the professor, what is the role of the giant triton snail in the coral reef ecosystem?
  • A. It competes with CoT starfish for food
  • B. Its shells provides habitat for CoT starfish
  • C. It is a predator of CoT starfish
  • D. It can repair coral that has been damaged by CoT starfish

 

  1. How might fertilizer runoff affect CoT starfish population?
  • A. It might increases the food supply for young CoT starfish
  • B. It might wash away nutrients that are beneficial for CoT starfish
  • C. It might destroy CoT starfish habitats
  • D. It might make phytoplankton dangerous for CoT starfish to eat

 

  1. According to the professor, how might storms affect CoT starfish?
  • A. Storms might interfere with CoT starfish’ spawning cycle
  • B. Storms might reduce the amount of plankton eaten by CoT starfish
  • C. Storms might carry starfish predators close to reef system
  • D. Storms might reduce the number of feeding areas available to CoT starfish

 

  1. What does the professor say about controlling the CoT starfish population?
  • A. It will be possible only after the causes of starfish population changes are better understood
  • B. Recent discoveries about CoT starfish have made controlling its population easier
  • C. Enforcing measures to limit runoff should be sufficient to control the starfish population
  • D. Monitoring populations of young starfish will probably not be useful

 

  1. Why does the professor mention that CoT starfish eat fast-growing coral?
  • A. To show the CoT starfish might benefit slow-growing coral
  • B. To explain fluctuation in the CoT starfish population
  • C. To indicate that the behavior of CoT starfish has changed over time
  • D. To emphasize the danger posed by CoT starfish to coral reefs


答案:
B C A D A A

发表评论

电子邮件地址不会被公开。 必填项已用*标注