2020-2021学年生物人教版七年级上册同步实验室 实验十一 测定种子的发芽率
※题型：单选题※知识点：单选题※试题难度：中等<br>在10个小麦种子袋中选出300粒种子测定发芽率,有270粒种子在一定时间内发了芽,那么,这10袋种子的发芽率是( )<br>A.10% B.20% C.80% D.90%<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/4140114500a74c1696e6ba9921ecc154/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/9ec0afdf124a48c5a64443229f155758/9E72F4EFFF19609F81CBA821B9A125CB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如表是霏霏在25℃和10℃条件下,分别用50粒小麦种子测定发芽率的实验结果。下列相关叙述中,正确的是( )<br><tbody><br>培养时间(天)<br>1<br>2<br>3<br>4<br>5<br>6<br>7<br>发芽数(粒)<br>25℃<br>0<br>7<br>15<br>33<br>47<br>47<br>47<br>10℃<br>0<br>0<br>0<br>2<br>8<br>21<br>48<br></tbody><br>A.25℃时种子发芽较慢<br>B.10℃时种子发芽较快<br>C.两种条件下发芽率几乎相同<br>D.两种条件下都有没发芽的种子,这与温度有关<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/0d0ba6d63acd46669dabc59fd39ba034/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/41931226911b4447b000cce9575588f0/A9BEB43FC4AAFD19792D66B3E5C62D6F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列四项是已经测得的某种子的发芽率,最适宜播种的是( )<br>A.60% B.70% C.75% D.94%<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/a6fbb02d127744c1b006f77b98eb0ef3/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/f71fc6700826465c99a229cf94c4b1ac/0480183D5A7B12C7DFDDE141B3E58802.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>抽样检测种子发芽率时,应尽避免( )<br>A.主观因素的影响<br>B.样本数量太少<br>C.样本不能代表总体<br>D.从总体中抽取少量个体做样本<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/b742cdfd0912447d9e532763f0e01fba/E7F0EDF83F40244C8F0C84B97471AED6.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>小良同学在做测定种子发芽率的实验时,做了三次,数据结果各不相同,第一次90%、第二次96%、第三次99%,你认为该种子的发芽率应为多少( )<br>A.99% B.96% C.90% D.95%<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/5999944bab5d44d5804edb4e2c6f725d/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/01d765c058ce4291b87360ae9760e1e8/FABC800755DDFC0527A4376AA6735603.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列关于测定发芽率的有关说法中,正确的一项是( )<br>A.测定发芽率时要保证将种子播种在肥沃的土壤中<br>B.测定发芽率时应当尽量挑选中等大小的种子<br>C.为节省种子,测定发芽率时要尽量少用种子<br>D.测定发芽率时要在适宜的温度下进行<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/2431641ba4804e009a5304dcff86d9f2/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/36e137fa664345c6a657bda9b06128e4/D6B71E9FDE4E2BF16D117455B7D26CDB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如果从100kg黄豆中取50g黄豆发豆芽,下列叙述正确的是( )<br>A.豆芽中的有机物含量比黄豆多<br>B.豆芽中生长最快的部分是胚芽<br>C.豆芽萌发过程中,提供营养的是子叶或胚乳<br>D.可以测量该黄豆种子的发芽率<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7f3dd7deb779411d82bb7ca729fc5b11/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/68cbd9cfc30c48b182a24f40e513f331/70728FD934F5758178B274A68914F67E.png"><br><br>
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