2020-2021学年苏教版七年级上册生物课堂小测 3.6.5光合作用和呼吸作用原理的应用
※题型：单选题※知识点：单选题※试题难度：中等<br>某温室大棚种植农作物,为了提高产量,采取了以下措施,不合理的是( )<br>A.延长光照时间<br>B.适当增加大棚内二氧化碳浓度<br>C.降低光照强度<br>D.白天适当提高室温,夜晚适当降低室温<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/8eec01c59f7f49f9a8b8ce8f5171fa75/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/4030292ca45b48b88ff98d7086707fcc/6040BC61D64FAF47BD1952D1266470FB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>有经验的农民在作物生长后期经常让农田通风,这样做可以提高作物的产量,主要原因是( )<br>A.阳光的照射更均匀<br>B.可以淘汰一些长势不好的作物<br>C.防治病虫害<br>D.增加作物间二氧化碳的含量<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/6efd2c7ea6144ac0b39f68c2bd3f4bd6/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/1148ed3088a045919d79d8fd3a8a0172/772CEB9868E3B880499BA44A443C9C62.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列说法正确的是( )<br>A.为了提高农作物产量,要不断提高种植密度<br>B.为了提高农作物光合作用,要不断降低种植密度<br>C.种植农作物时,既不能过稀,也不能过密,应该合理密植<br>D.以上说法都不对<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/f118ffc3d47046b3a1ca2a679151890b/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/6ca546204c2546c6a9cb232e5b40cbe7/286B58C139E6A12247A1FBBACE3D2CCC.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>为提高温室内作物产量,以下措施正确的是( )<br>A.白天和夜晚都适当提高温度<br>B.白天适当提高温度,夜晚适当降低温度<br>C.白天适当降低温度,夜晚适当提高温度<br>D.白天和黑夜都适当降低温度<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/fb0be1b2a93645b8ba381b21b6286dcb/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/2d28f786bec048ada72b9fa1d514eea7/D6341083D2DFC2BE933336D570396499.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>在田间收回玉米后,农民会选择合适的地方保存玉米,保存玉米的有利环境是( )<br>A.潮湿、高温 B.潮湿、低温 C.干燥、高温 D.干燥、低温<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2011/1c1d7ec5cd4c4cba89b66c10c6e48b31/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2011/d8667831c10f42d694a67bbee2fab575/FC7FA7EA7489CFFF28BF435694B706F4.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>妈妈把水果放人冰箱贮存,是为了降低水果的( )<br>A.光合作用 B.吸收作用 C.呼吸作用 D.运输作用<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/c3679e8f72414392b7200ac48ca9c721/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/6d9abc109a724d3695fea9d4f750c98c/1D39B5426768C5481D7FE793AAAB9FB8.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列现象能用生物的呼吸作用原理解释的是( )<br>A.移栽植物时要带土移栽 B.大树下面空气新鲜<br>C.果农修剪果树 D.蔬菜水果冷藏保存<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/5eba4e15bc38460dae978321a2f518e3/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/2b16cd4a0e784a079788a3f3992886cf/D42F982AB12F593B1758196E1F442CCF.png"><br><br>
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