Warning Coloration



Warning Coloration

Many animals have defense mechanisms that help protect them from predators. In some cases, these animals have distinct coloring that signals predators of the presence of such defenses. This type of coloring is called warning coloration. If a predator does not recognize the meaning of this coloration and attacks, it may suffer significant discomfort or injury when its would-be prey employs its defense mechanism. As a result, the predator learns to associate the warning coloration with negative consequences, and will from that point forward avoid attacking animals that have that coloration.

听力材料 精听听写练习

查看听力原文 查看听力原文

    <-NARRATOR:-> Now listen to part of a lecture in a biology class.
    <-MALE PROFESSOR:-> We have a good example of this with the skunk.
    As most of you know, the skunk is a furry little mammal that can be found throughout North America.
    Skunks have a very distinctive marking.
    Their body is mostly black, and they have a big white stripe that runs from the top of their head,
    all the way down their back, and along their big, bushy tail.
    So they're very easy to see
    and very easy to recognize, even from a distance.
    Skunks also have special glands under their tail that produce a terrible-smelling liquid.
    And when skunks are approached by a predator, they lift their tail and spray the predator with this liquid.
    For example, let's say a wolf is preparing to attack a skunk.
    As the wolf approaches,
    the skunk lifts its tail and sprays the wolf.
    That's very, very unpleasant for the wolf,
    because it's now covered with this repulsive, foul-smelling liquid.
    The wolf doesn't want to be sprayed again, so it backs off and leaves the skunk alone.
    And from then on, whenever that wolf sees a furry little black body, with a big white stripe running from its head to its tail,
    it'll recall that terrible smell,
    and it'll be sure to stay
    far away.


Explain how the professor's example from the lecture illustrates warning coloration.


我的笔记 编辑笔记

  • 优秀录音
  • 网友思路
  • 名师思路
  • 分数最高
  • 会员福利内容准备中,丰富答题思路即将上线