2020-2021学年生物苏科版七年级下册随堂检测（12）土壤里的小动物
※题型：单选题※知识点：单选题※试题难度：中等<br>蚯蚓所属的动物类群是( )<br>A.环节动物 B.节肢动物 C.腔肠动物 D.两栖动物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/943b07f4201740b99fd72711f41ec020/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/4f074eebd4d3426982c72e221ee3d3cb/80D64E339CB1B7C9ABA66601FE4261BD.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>蚯蚓的生存环境是( )<br>A.潮湿、疏松、植物稀少的土壤<br>B.潮湿、疏松、富含有机物的土壤<br>C.潮湿、疏松、富含氧气的土壤<br>D.干燥、疏松的土壤<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/8f648206f677486c9fec2202e773db65/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>蚯蚓可在土壤中钻来钻去,它的运动主要靠( )<br>A.肌肉 B.刚毛<br>C.肌肉与刚毛配合 D.环带<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/f65c753fd65b4f79a14e988a80cd2602/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/e8e89985a8284ad2a17100dcb7ddf63a/9DCD63ECA99C1D96F3D3D54C0ACDC04B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>在做观察蚯蚓的实验时,同学们发现蚯蚓的体表是有黏液的,这有利于蚯蚓( )<br>A.吸收营养 B.保持水分<br>C.进行呼吸 D.在土壤中运动<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/a02804f0ddfc4ba08bb0187fa92da1ed/D7C9A679F3C72D4F1064B7D0A0FD4AD8.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/148360fa0f114ba98bcec1924cd7e710/EDEF0A59D6A0A6B3978BC80F3F6801AA.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>取一条活蚯蚓,放在玻璃板上,观察蚯蚓的外部形态及运动。<br>1.用手触摸蚯蚓的腹部,会有凹凸不平的感觉。用放大镜观察,可以看到腹部有许多小突起,这些小突起就是。<br>2.在实验过程中,应该经常用浸水的湿棉球轻擦蚯蚓的体表,这是因为蚯蚓靠呼吸。<br>3.实验后应该如何处理蚯蚓?。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/2cb9b02ee4ed47c18056418e0bc0f273/7C8929406D111C50D8194BA6E3499CD0.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/fa4947df8428490f952523605fcbeeb0/84927E2AD13F914473A1AD02E127FBE1.png"><br><br>
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