5.1.4鱼2021-2022学年生物人教版八年级上册随堂小测
※题型：单选题※知识点：单选题※试题难度：中等<br>在观察鲫鱼适应水中生活的特征时,吸取适量稀释的红墨水,滴在鯽鱼口的前方。会看到红墨水从鳃盖后缘流出,说明鲫鱼的呼吸器官是( )<br>A.口 B.鳃 C.鱗片 D.侧线<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/81e11480500844c285b458320f72f169/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/d96d899fc42449bbb12869504a69a34c/4855B16BCDC6D195060F078095529B9A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>鱼在游泳时,产生前进动力的部位主要是( )<br>A.尾部的摆动 B.胸鳍和腹鳍的摆动<br>C.躯干部和尾部的摆动 D.各种鳍的共同作用<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/978f5eb7ee614332a52c53613e967c7c/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/6309900e135c4dc788873be51e755493/97C955DB603F6BA8039589463CCCA612.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>鲫鱼的身体有许多特征表现出与水中生活相适应的特点。下列说法错误的是( )<br>A.鲫鱼游泳时,靠各种鳍产生向前的动力<br>B.鲫鱼的体色是一种保护色,其特点是背面深灰色,腹面白色<br>C.鲫鱼体形呈纺锤形,体表覆盖鳞片并能分泌黏液,有利于在水中游动<br>D.鲫鱼体腔内有鳔,鳔内充满气体,能够调节身体在水中的深浅位置<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/4067531a046f4a16bf499583b47d6d16/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/d5ca240521294585a77f3571c9d80cbf/58375D5283F7FF22A63BE33C6BE47DCF.png"><br><br>
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