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雅思真题听力场景精练 第125期:模拟试卷(四) Section9

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A similar kind of mimicry is" Mullerian mimicry" - named after another another early biologist and in this sort of mimicry,

both the model and the mimic are dangerous or taste bad.

A very obvious example is the way that so many unrelated species of bees, wasps, and ants have assumed similar,

bold, black and-yellow or black and - orange banded patterns.

By doing this, Mullerian mimics present a united image that predators soon learn to be wary of.

There's also another aspect of mimicry that I 'd like to mention, too, and that's the mimicry used by predators.

This is called" aggressive mimicry", and it is used to conceal or misrepresent a predator until its prey comes near enough to capture.

Many mantids, for example, are green or brown, so that they blend in with their plant surroundings, but some tropical mantids are fantastically shaped and colored,

like the beautiful Orchid Mantis, which resembles a petal of one of those tropical flowers, and it hides motionless next to one of these orchids until an insect comes within its reach.

There 're also several green colored vines and branches of the jungle until they suddenly lash out to grab their prey.

Actually, there is an endless number of ingenious mimics in the natural world, and I recommend that you all try a Google Images search tonight for some more interesting examples of this fascinating behavior.

重点单词   查看全部解释    
tropical ['trɔpikəl]

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adj. 热带的,炎热的,热带植物的

 
capture ['kæptʃə]

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vt. 捕获,俘获,夺取,占领,迷住,(用照片等)留存<

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petal ['petl]

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n. 花瓣

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motionless ['məuʃənlis]

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adj. 不动的,静止的

 
ingenious [in'dʒi:njəs]

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adj. 机灵的,精制的,有独创性的

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blend [blend]

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v. 混合
n. 混合物

 
recommend [.rekə'mend]

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vt. 建议,推荐,劝告
vt. 使成为可取,

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bold [bəuld]

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adj. 大胆的,粗体的,醒目的,无礼的,陡峭的

 
conceal [kən'si:l]

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vt. 隐藏,隐瞒,掩盖

 
assumed [ə'sju:md]

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adj. 假装的;假定的

 


关键字: 试卷 模拟 雅思

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