八年级生物上册5.1.5《两栖动物和爬行动物》练习(新版)新人教版.doc

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1第五节 两栖动物和爬行动物一、填充题1爬行动物是一支真正生活到 上来的脊椎动物, 等都属于爬行动物,爬行动物的主要特征是: 。2爬行动物最繁盛的时代是 ,这个时代称为 。3青蛙的皮肤是裸露的,能够分泌 ,有辅助 的作用。4青蛙的幼体是 ,生活在 中,用 呼吸,心脏只有 。发育为成体后,具有肢,用 呼吸,心脏有 。5两栖动物的主要特征是: 。二、填表6对比青蛙和蜥蜴,找出它们的主要区别。青蛙 蜥蜴生活环境 皮肤和覆盖物 呼吸系统 生殖发育通过青蛙和蜥蜴的对比,说明: 。7比较鲫鱼和青蛙的几个主要不同之处。鲫 鱼 青 蛙2生活环境 呼吸系统 心 脏 通过鲫鱼和青蛙的对比,说明: 。二、判断题8青蛙的成体既能生活在水里,又能生活在陆地上,所以叫做两栖动物。( )9青蛙是变温动物。( )10青蛙在陆上用肺呼吸,在水中游泳时用皮肤呼吸。( )11青蛙在生殖季节,雌雄蛙抱对,进行体内受精。( )3参考答案:1.陆 蜥蜴、壁虎 皮肤表面覆盖角质的鳞片或骨质的甲,用肺呼吸,体温不恒定,四肢短小或无四肢,爬行 2.中生代 爬行动物时代 3.黏液 辅助呼吸4.蝌蚪 水中 鳃 一心房一心室 四肢 肺 两心房一心室5.幼体生活在水中,用鳃呼吸,多数成体生活在陆地上,少数成体生活在水中,主要用肺呼吸,皮肤裸露、湿润,有辅助呼吸的作用,体温不恒定。6.略 7.略8.错 9.对 10.错 11 错

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