2020-2021学年八年级下册生物北师大版同步课时作业（9）生态系统概述
※题型：单选题※知识点：单选题※试题难度：中等<br>下列各项中,不能称为生态系统的是( )<br>A.碧峰峡所处的雨城区 B.碧峰峡风景区所有植物<br>C.碧峰峡风景区的一个池塘 D.碧峰峡风景区<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/263237ca20634a9597c5397263fda712/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>如图为著名的洞庭湖,古称云梦、九江和重湖,曾号称“八百里洞庭”,请你根据我们所学的知识作出正确的选择:能构成一个生态系统的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/09872A283CEA97D3798CA0E9AE78AC92.png"><br>A.整个洞庭湖 B.洞庭湖里的水<br>C.洞庭湖所有的鱼 D.洞庭湖所有的生物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/cda3163ab0164ffe8cd5f68474efbec3/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/f2d7550cad0e4597b9b0b8ecfe9fd057/91A535734C4740C1A1BFB07D4DFAA54B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图是自然界碳循环的简图,图中甲、乙、丙各代表生态系统中的哪种成分( )<img src="https://picture2.zhihuicn.com/testImage/2/2018/5/19/36EC411B70BF3926E64F290090850A02.png"><br>A.甲为生产者,乙为分解者,丙为消费者<br>B.甲为消费者,乙为分解者,丙为生产者<br>C.甲为分解者,乙为生产者,丙为消费者<br>D.甲为生产者,乙为消费者,丙为分解者<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2018/19429bf6f12a4202a66446105cb96de2/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2018/767fb6d19cdb41d78621f68314299116/C189ABC2C1FFF6CD50794371B5FA5FE5.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>若用如图生物表示组成某生态系统的生物部分,则还缺少( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/11/3653F3B71D570F192DB5444AF98DEBDB.png"><br>A.细菌或真菌 B.细菌和真菌 C.细菌 D.真菌<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/b6b5b8f04df6433c8fe744e788a730b5/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/d20301eaee5d4aee8ff87edf141e15c2/2444421AA319C3C2201C4E36BDDD5969.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图能表示出一个生态系统的( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/22/478EB671907EB299AE8B4D705CE9DC3C.png"><br>A.食物链与食物网 B.物质循环<br>C.组成成分及关系 D.能量流动<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/bf341b97fb944628a74d0d4e6755b57f/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/06130c7321884fa89a26d0cf10bb5a64/D53B802672CF14593B1298721A6184FB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>关于生态系统组成成分的叙述,错误的是( )<br>A.生物成分可划分为生产者、消费者、分解者<br>B.生产者最重要,消费者和分解者可有可无<br>C.非生物成分对生物成分有直接或间接影响<br>D.细菌、真菌属于分解者<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/1aa30ed4ab50438e816fbace7e028d30/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/765421296d114516badb949fa224259b/778F494F9C969F433319C865BA6B852A.png"><br><br>
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