辽宁省辽阳市灯塔市2019-2020学年七年级上学期期中考试生物试卷
※题型：单选题※知识点：单选题※试题难度：较易<br>苹果树不宜在热带栽种,柑橘树不宜在北方地区栽种,起制约作用的主要生态因素是( )<br>A.阳光 B.温度 C.水 D.空气<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/1f6f3bc62259456980c69440f28ed571/4EF59C4461E28F3B3B09551EB8B9AC3F.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/f0591bcdb45f4826b7a11872c866cd6e/E6958484165484EDE525072AFD80325B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>用显微镜进行观察的材料必须是( )<br>A.新鲜的 B.完整的 C.薄而透明的 D.干燥的<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/e776c63a4a234d3eab33169a7354237f/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/c5d9dce70e154999abf3b1027971e5fd/0E4F5B770D984B4D7C190F561F5C1EEB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>在设计对照实验时,应注意的问题是( )<br>A.所有变量都相同<br>B.所有变量都不相同<br>C.实验变量相同<br>D.除了实验变量外,其他因素都相同<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/2ab9a10cf06b402c8f37914e7ba6f909/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/b0ceb3c016a0493fa0cdb0fd54eebdee/D44B111FAD7F1B71960173F9A2E55017.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>植物细胞中,为细胞生命活动提供能量的结构是( )<br>A.细胞膜 B.叶绿体 C.细胞核 D.线粒体<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/d16dfc8978bd4d589a132de24ceda361/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/47b22e3c794a4310b17e4982ac3a4a6a/F23A35CBC2C09DA1DD59074F7EA19A93.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>“种瓜得瓜,种豆得豆”是生物的遗传现象控制这种现象的遗传物质存在于( )<br>A.细胞膜 B.细胞核 C.细胞质 D.细胞壁<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/ad84a2f34a1444a296ae0ffe0e6d0d1f/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/d2e31042ae0b41f3a929c7079e7e37f7/92D4576A0A881A401600814D3021ACFD.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>人体具有接受刺激、产生兴奋、传导兴奋等功能的组织是( )<br>A.上皮组织 B.肌肉组织 C.结缔组织 D.神经组织<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/74008320fb604dad9909e4e813a09487/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/1cbfee886b2b4e4aae2a9dbcaeacd6c6/2EAE288FA1985DC460093BCB07840C69.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>关于人体的结构层次,表述正确的是( )<br>A.细胞→组织→器官→个体<br>B.细胞→组织→器官→系统→个体<br>C.细胞→器官→组织→个体<br>D.细胞→器官→组织→系统→个体<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/c995bea8969b4aa3a33c08cd5357dcc9/4EF59C4461E28F3B3B09551EB8B9AC3F.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2a77f9dbe5d84e77811c674f1d61cb27/591ADB5215B4F355BDE2B5AB88B0B63E.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列不是种子萌发必备的环境条件是( )<br>A.适宜的温度 B.一定的水分 C.充足的空气 D.光照<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7f5b8df0fcc849668a5a9568ae75fdea/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/23d42733aaf14c628d39b7d04475a8eb/070893BEAF3ED9AD5FF25B67FBC67420.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>“使用显微镜观察洋葱鳞片叶表皮细胞临时装片”的同一部位,选择下列哪种目镜和物镜的组合,在视野中所看到的细胞数目最多( )<br>A.目镜10,物镜10 B.目镜10,物镜40<br>C.目镜25,目镜10 D.目镜5,物镜40<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/ede9053d3952449094e72e512cd595cc/DA50F910BECBBBA4AAB35D7A1AB24524.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/e32ee5e774e04a2d8f989e72892ca5b9/23D16CF842F4477C801AB58B20EAD523.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较易<br>在显微镜的视野中看到的物像是_______。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7ff0711620e344f1ace2e3194bd4eb72/17A96D185F65FA58CE9722476013327F.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/b4c96b28a3b44a5ebc0a3eacc9b90559/5045D2F1BAC9634C56681887E89EF74F.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较易<br>制作人的口腔上皮细胞临时装片时要在载玻片的中央滴一滴________。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/2dadb4ec3edb49f185fa043911621ff4/01A1C65EDA0DC0110270CDAF0691AD33.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/bf300b1e67bb419487557b38dee7e3d0/8A02E0234B42A3099625440EF5E0AD77.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>显微镜下观察到动物细胞与植物细胞的区别:相同点:都有______、______、_______、_______。不同点:植物细胞比动物细胞多了_______、_______、_______。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/38c2bd137e794ef8bc8d168bb724ba54/0A06C2E5FF3021D03EFD1103D04839B0.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/4b7060d2ca6d4e50a0cde1000ba83ba7/942E33FE84920A25187D9CEC05512DFD.png"><br><br>
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