初中毕业升学考试（安徽桐城卷）生物（解析版）
题型：选择题※难度：较易
<div><div><p>【题目】下表表示三种哺乳动物的分类，下列叙述正确的是</p><table cellspacing="0" cellpadding="0" style="width:100%; border:0.75pt solid #000000; border-collapse:collapse"><tr style="height:20.25pt"><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.38pt 5.03pt; vertical-align:middle"><p>目<br /> </p></td><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.38pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>鲸目<br /> </p></td><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.38pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>食肉目<br /> </p></td><td style="width:50.7pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.38pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>食肉目<br /> </p></td></tr><tr style="height:20.25pt"><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.75pt 5.03pt 3.38pt; vertical-align:middle"><p>科<br /> </p></td><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.75pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>须鲸科<br /> </p></td><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.75pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>鼬科<br /> </p></td><td style="width:50.7pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.75pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>猫科<br /> </p></td></tr><tr style="height:20.25pt"><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.75pt 5.03pt 3.38pt; vertical-align:middle"><p>属<br /> </p></td><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.75pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>鳁鲸科<br /> </p></td><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.75pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>鼬属<br /> </p></td><td style="width:50.7pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding:3.75pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>猫属<br /> </p></td></tr><tr style="height:21pt"><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; padding:3.75pt 5.03pt 3.38pt; vertical-align:middle"><p>种<br /> </p></td><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; padding:3.75pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>蓝鲸<br /> </p></td><td style="width:50.7pt; border-right-style:solid; border-right-width:0.75pt; padding:3.75pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>雪貂<br /> </p></td><td style="width:50.7pt; padding:3.75pt 5.03pt 3.38pt 5.4pt; vertical-align:middle"><p>家猫<br /> </p></td></tr></table><p> </p><p> </p><p>A. 蓝鲸与雪貂亲缘关系最近 B. 蓝鲸与家猫亲缘关系最近</p><p>C. 雪貂与家猫亲缘关系最近 D. 三种动物的亲缘关系相同</p><p> </p></div></div>
<div><p>【答案】C</p><p>【解析】A、蓝鲸属于鲸目，雪貂属于食肉目，他们同属哺乳纲，分类单位越大，生物的相似程度越少，共同特征就越少，生物的亲缘关系就越远；A错误；</p><p>B、蓝鲸属于鲸目，家猫属于食肉目，他们同属哺乳纲，分类单位越大，生物的相似程度越少，共同特征就越少，生物的亲缘关系就越远；B错误；</p><p>C、雪貂和家猫同属于食肉目，分类单位越小，生物的相似程度越多，共同特征就越多，生物的亲缘关系就越近。C正确；</p><p>D、雪貂和家猫同属于食肉目，蓝鲸属于鲸目，雪貂和家猫亲缘关系近。D错误。</p></div>
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