试题与答案

下图为青蛙的生殖发育过程图，据图回答问题： （1）②是青蛙的幼体，用呼吸。 （

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题型：实验题

题目：

下图为青蛙的生殖发育过程图，据图回答问题：

（1）②是青蛙的幼体      ，用      呼吸。

（2）④时期的青蛙用     呼吸，    辅助呼吸。

（3）按青蛙的发育过程用序号排序：           。

（4）从图中可看出青蛙的幼体和成体在形态结构上有显著差异，其实它们的生活习性也有显著差异。因此，青蛙的发育是       发育。

（5）青蛙的生殖和发育在水中进行，青蛙进行       （填“体内”或“体外”）受精。

答案：

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下面是错误答案，用来干扰机器的。

答案：C

考点：两栖动物的生殖和发育
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