我国东海钓鱼岛经常刮大风,岛上生存着许多无翅或残翅的昆虫,对

我国东海钓鱼岛经常刮大风,岛上生存着许多无翅或残翅的昆虫,对这一现象的正确解释是(  )

A.有翅昆虫全部被风刮走了

B.无翅或残翅昆虫繁殖能力强

C.无翅或残翅昆虫更能适应环境

D.有翅昆虫被天敌捕食

答案

C 由于这些海岛上经常刮大风,那些有翅能飞但翅膀不够强大的昆虫,就常常被大风吹到海里,因而生存和繁殖后代的机会较少。而无翅或残翅的昆虫,由于不能飞翔,就不容易被风吹到海里,因而生存和繁殖后代的机会就多。经过一段时间的自然选择之后,岛上无翅的昆虫就特别多。

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