2020-2021学年八年级下册生物冀少版同步课时作业（14）食物链和食物网
※题型：单选题※知识点：单选题※试题难度：较易<br>下面是四名同学分别写出的某一生态系统中的食物链,其中书写正确的是( )<br>A.阳光→草→兔→狼 B.草→昆虫→青蛙→蛇<br>C.蛇→青蛙→昆虫 D.蝗虫→鸟→细菌和真菌<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/ef59fa29a9874f708a3300d3f8fa6a35/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/18b395b2e9ae4308ba93e05da44f2436/C82DC21704AF89A30617F6A47531A407.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图是生产者、消费者和分解者的关系示意图,其所含的食物链是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/23/C9704D12E297D24C767B51753FAF6278.png"><br>A.③→②→① B.⑤→①→②→③<br>C.①→②→③ D.④→③→②→①<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/49d9f5337d2442cdb3b9051d9e95e212/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/59356a745dca4305aab612dc3ac99f84/106BA38A4AE4EF383B4D771E7CFB9A2C.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下表是某水域生态系统流进各营养级的能量数值表,表中a、b、c、d分别表示不同的营养级,其构成的食物链是( )<br><tbody><br>生物种类<br>a<br>b<br>c<br>d<br>能量(<img)<br><img<br><img<br><img<br><img<br></tbody><br>A.a→b→c→d B.d→c→b→a C.d→a→b→c D.c→b→a→d<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/81ada4218ada4c2ebac14f1d6f82b187/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/9f966e33c7a948138bdba27f8602ef0f/BE66AA07E3098D0742AB71572CB8A240.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图为淡水生态系统的一条食物链,若浮游植物受到难以分解的农药DDT污染,则大鱼体内将积累大量的农药DDT。下列叙述错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/28/BA61FB1044A734977F1A016599846233.png"><br>A.生态系统中的物质和能量是沿着食物链流动的<br>B.环境会对生物造成影响<br>C.生物与生物之间相互影响<br>D.各生态系统之间互不影响<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/2ac10cbc19df42b280b00f521b82104d/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/60a5196643c74b0aaa5115320ed64562/ACC07D4DABC7EB3F90F4CC05DE3011BB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列关于生产者、消费者、分解者三者物质循环的关系,表达正确的是( )<br>A.生产者→消费者→分解者<br>B.生产者→分解者→消费者<br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/10/9623B33E701C0573475653D0C1AA25B1.jpeg"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/10/0DED6679BCFBD7200649CF6BB52714C5.jpeg"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/bf0cb6d5cec5476a94c6c35b06cbc6b7/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/8c5dbc3deef343f2b24fd2122d4e170f/BF841F2EB5E42ED46AFD003DBA1BDD24.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下图表示某草原生态系统中食物网的一部分,若某种有毒物质已进入该食物网,而且在生物体内难以分解,无法排出,则体内有毒物质积累最多的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/7/16/B2DE49DB5D4305D4C2E8D3ED1D555977.png"><br>A.鼠 B.麻雀 C.蛇 D.猫头鹰<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/98c9bf3b24114b82ab6124c7d94a04ba/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/1081d6bff51c4203b5a2ffc4d480d9c8/5D99DD825E6E18D35E8B2BAB5694F5AC.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下图是一幅农田生态系统的食物网图。请你分析下面哪项是正确的( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/3/B5BD57E9733E1DB0DD604314C6CAE396.png"><br>A.这个食物网中有4条食物链<br>B.这个食物网是一个生态系统<br>C.这个食物网中有5条食物链<br>D.蛇和鸟能够获得最多的能量<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/f1ba0ececad844a985d46f900f3bf563/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/aa73408ef8ad4894bc3095a4863bb752/538B6117B0F81F06E1CCB8C522BA8293.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>如图是生态系统中几种生物的关系图,下列说法正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/7/29/731ED6B2E4945AF21FB0091164C6D581.png"><br>A.②③④是消费者<br>B.①②③④共同构成了生态系统<br>C.该生态系统具有自我调节能力<br>D.该图同时存在食物链和食物网<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/892237430a3a493790dce77e86668dba/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/bb478b36c5544dd092b409af71c47071/FF47B096942AC74E4268CA4024C9835A.png"><br><br>
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