八年级生物上册5.1.7《哺乳动物》同步练习1(新版)新人教版.doc

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1、1哺乳动物1_是脊椎动物中形态结构、生理功能和行为最复杂的高等动物类群。这类动物的主要特征是_、_ 、_、_、_、_、_。2_是一层肌肉膜,它把体腔分为_和_两部分,它能帮助完成_。3下列不是哺乳动物特征的是 ( )A胎生、哺乳 B体温恒定C用鳃呼吸 D体腔内有膈4家畜一般是指人们饲养的 ( )A软体动物 B节肢动物 C鸟类动物 D哺乳动物5比较鸟类和哺乳类的形态特征,有哪些相同点和不同点?6请将下面的动物归类。A娃娃鱼 B鲸鱼 C墨斗鱼 D比目鱼 E海马 F鳄鱼 G鲨鱼 H鲍鱼 M虾蛄 K龟 L野鸭 Y对虾 R梭子蟹 T河蚌 Q水蚤(1)属于软体动物的是_; (2)属于节肢动物的是_; (3

2、)属于鱼类的是_; (4)属于两栖类的是_;(5)属于爬行类的是_; (6)属于鸟类的是_;(7)属于哺乳类的是_;(8)属于脊椎动物的是_;2(9)属于无脊椎动物的是_;(10)区分上述动物是脊椎动物还是无脊椎动物的重要依据是_。参考答案:1哺乳动物 身体被毛 用肺呼吸 体温恒定 体腔内有膈 胎生 哺乳 2膈 胸3腔 腹腔 呼吸作用 3C 4D 5相同点:体表被毛,体温恒定等。不同点:鸟类前肢变成了翼,骨骼中空,卵生;哺乳类:体腔中有隔,胎生,哺乳等。 6(1)C、H、T(2)M、Y、R、Q(3)D、E、G(4)A(5)F、K(6)L(7)B(8)A、B、D、E、F、G、K、L(9)C、H、M、Y、R、T、Q(10)脊椎动物体内有脊椎骨构成的脊柱

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