小学科学教科版四年级下册第一单元《植物的生长变化》课课练习题2

教科版四年级科学下册第一单元植物的生长变化课课练1.种子里孕育着新生命一、填空题1、像花生、蚕豆种子的结构包括（  ）（  ）（  ）（  ）和（  ）。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)2、像玉米、小麦等种子由（  ）（  ）（  ）（  ）（  ）和（  ）等部分构成。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)3、我们在观察种子外形时，如果种子太小，可以借助（  ）进行观察。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)4、（  ）是包在种子外面的保护层,起到保护(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)种子的作用。5、种子里最重要的部分是胚，胚是有（  ），可以发育成一株新的植物。二、判断题，对的打√，错的打×× 。1、玉米种子和蚕豆种子一样都有子叶和胚乳。（  ）2、不同种子的形状、大小、颜色等各不相同。（  ）3、浸泡过的种子皮容易撕下。（  ）4、黄豆、花生的种子在水中浸泡一两天后、会变得更大更坚硬。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）5、种子是有生命的，但种子的胚没有生命。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）6、不同植物的种子结构相同的特点就是都有胚。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）7、绿色开花植物的新生命几乎都是从种子开始的。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）8、像玉米、小麦一类的种子，除了种皮、胚，还有胚乳。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）9、种子在萌发的过程中需要充足的光照。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）三、选择题1、绿豆种子发芽时，我们看到的外部长长的“豆芽”将来发育成植物的（ ）。  A、根   B、茎  C、叶2、下列各种方法中，能够用来观察种子内部结构的是（   ）。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)A、用放大镜观察(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)B、将种子掰开观察(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)C、将种子研碎观察(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)3、（ ）被称为种子的“铠甲”,起着保护种子的作用。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)A、胚芽  B、胚根  C、种皮4、一头尖，一头圆，黄色，长得像牙齿，这粒种子是（   ）种子。A、绿豆  B、芝麻  C、玉米四、填图题下面的图是蚕豆中的解剖示意图，在括号中填写出相应的名称。五、综合题1、观察玉米种子结构，回答下列问题。（1）玉米种子和蚕豆种子都是有（    ）和（     ）两部分。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503249&idx=2&sn=70e6c5f9990c7cd6dea7be14e4447152&chksm=e96f2ac1de18a3d75cabbf77c3efc39954460b363e9184e06774ff8d119aff8a468a66745913&scene=21"\l"wechat_redirect"\t"_blank​)（2）玉米种子和花生种子结构上的区别是：玉米的种子里有（     ），而蚕豆种子里没有（  ）。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503249&idx=2&sn=70e6c5f9990c7cd6dea7be14e4447152&chksm=e96f2ac1de18a3d75cabbf77c3efc39954460b363e9184e06774ff8d119aff8a468a66745913&scene=21"\l"wechat_redirect"\t"_blank​)（3）蚕豆种子和玉米种子的哪一部分可能发育成新的植物?(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503249&idx=2&sn=70e6c5f9990c7cd6dea7be14e4447152&chksm=e96f2ac1de18a3d75cabbf77c3efc39954460b363e9184e06774ff8d119aff8a468a66745913&scene=21"\l"wechat_redirect"\t"_blank​)2、实验题为了验证水对种子发芽的影响，小明同学设计了一组对照试验。观察组的设计：在一个小烧杯中放一些棉花，在棉花和杯壁中间放一颗花生的种子，倒入适量的水，让保持棉花湿润。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（1）请你说一说，这一实验中的对照组小明是怎样设计的?(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（2）将两组杯子放在屋内温暖的地方，第四天的时候，发现花生种子冒出了一点小白牙。（如上图），对照组的情形怎样？ (​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（3）从这个对比试验中可以得到什么结论？ 2.种植凤仙花一、填空题1、绿色开花植物的新生命几乎都是从（   ）开始的。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)2、播种时要选择（    ）（    ）的种子(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)3、种子在萌发时,需要具备充足的（     ）适宜的（   ）和足够的（     ）(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)4、植物的种子获得了水分、空气和温度这些适宜的条件，胚便开始生长，这个过程叫做种子的（     ）。5、播种的一般过程是：松土、（    ）覆土、（    ）。二、判断题1、要想种好风仙花，我们需要了解风仙花的栽培方。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）2、先用开水浸泡过的种子更加容易发芽。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）3、风仙花播种时，种子播种的越深越好。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）4、需要给凤仙花的种子浇适量的水才能保证风仙花种子萌发。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）5、凤仙花最适宜生长环境是黑暗潮湿。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）6、花盆底部有小孔,是为了让风仙花种子萌发有更大的空间。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）7、将种子放入水中，不够饱满的种子会浮在水面上。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)（  ）8、有些植物可以用根、茎来繁殖后代。（  ）三、选择题,将正确的序号填在括号内1、在花盆里栽种风仙花时，一般会把一块瓦片放在花盆底部的出水孔上，然后装进细土。这样做是为了（   ）(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=4&sn=dd67cc578e1145dec45ed231b91d0f4b&chksm=e96f2a8bde18a39d6a3daeb90da1cf59d5ab9285573159f59d079342aa9b2b2b2104d144a523&scene=21"\l"wechat_redirect"\t"_blank​) A.使风仙花的根不能向下生长(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=4&sn=dd67cc578e1145dec45ed231b91d0f4b&chksm=e96f2a8bde18a39d6a3daeb90da1cf59d5ab9285573159f59d079342aa9b2b2b2104d144a523&scene=21"\l"wechat_redirect"\t"_blank​) B.使风仙花的种子容易呼吸空气(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=4&sn=dd67cc578e1145dec45ed231b91d0f4b&chksm=e96f2a8bde18a39d6a3daeb90da1cf59d5ab9285573159f59d079342aa9b2b2b2104d144a523&scene=21"\l"wechat_redirect"\t"_blank​) C.增强土壤的肥力(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=4&sn=dd67cc578e1145dec45ed231b91d0f4b&chksm=e96f2a8bde18a39d6a3daeb90da1cf59d5ab9285573159f59d079342aa9b2b2b2104d144a523&scene=21"\l"wechat_redirect"\t"_blank​)2、在播种风仙花的时候，种穴深度大约（  ）即可。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=4&sn=dd67cc578e1145dec45ed231b91d0f4b&chksm=e96f2a8bde18a39d6a3daeb90da1cf59d5ab9285573159f59d079342aa9b2b2b2104d144a523&scene=21"\l"wechat_redirect"\t"_blank​) A.1厘米    B.2厘米  C.3厘米(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=4&sn=dd67cc578e1145dec45ed231b91d0f4b&chksm=e96f2a8bde18a39d6a3daeb90da1cf59d5ab9285573159f59d079342aa9b2b2b2104d144a523&scene=21"\l"wechat_redirect"\t"_blank​)3、下列环境最适宜风仙花生长的是（     ）(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=4&sn=dd67cc578e1145dec45ed231b91d0f4b&chksm=e96f2a8bde18a39d6a3daeb90da1cf59d5ab9285573159f59d079342aa9b2b2b2104d144a523&scene=21"\l"wechat_redirect"\t"_blank​) A.黑暗潮湿   B.向阳湿润  C.向阳干燥(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=4&sn=dd67cc578e1145dec45ed231b91d0f4b&chksm=e96f2a8bde18a39d6a3daeb90da1cf59d5ab9285573159f59d079342aa9b2b2b2104d144a523&scene=21"\l"wechat_redirect"\t"_blank​)4、为了保证风仙花的正常生长，必须挑选（    ）的种子。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=4&sn=dd67cc578e1145dec45ed231b91d0f4b&chksm=e96f2a8bde18a39d6a3daeb90da1cf59d5ab9285573159f59d079342aa9b2b2b2104d144a523&scene=21"\l"wechat_redirect"\t"_blank​)HYPERLINK"http://mp.weixin.qq.com/s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=4&sn=dd67cc578e1145dec45ed231b91d0f4b&chksm=e96f2a8bde18a39d6a3daeb90da1cf59d5ab9285573159f59d079342aa9b2b2b2104d144a523&scene=21"\l"wechat_redirect"\t"_blank" A、坚硬  B、光滑   C、饱满无损伤四、排序题:将播种风仙花的过程按顺序排列A、选择那些饱满的、没有受过损伤的种子(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)B、用小棍在土中按出2~3个深度约1厘米的种穴(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)C、往花盆中浇适量的水,使土湿润,将它放在温暖的地方(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)D、准备好花盆和土。把一块小瓦片放在花盆的出水孔上,然后放入适量的土。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)E。每个种穴里放2粒风仙花的种子，再用土盖上。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)正确的顺序是（   ）→（   ）→（   ）→（   ）→（   ）(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)五、简答题  农业生产中为什么要挑选饱满的种子来播种?3.种子长出了根一、填空题。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)1、种子萌发先长出了(   ),它是由(    )发育而来的。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)2、每一株植物都有非常多的根，每株植物的根的总和叫做（  ）。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)3、根系分为（   ）和（   ）两类。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503323&idx=2&sn=2f0f3cbea73d82f6301fd58fc1b906d1&chksm=e96f2a8bde18a39dd71f61da9484fb8d0865c0f611f5fba27153c4dbccd43db0e1caab6c8732&scene=21"\l"wechat_redirect"\t"_blank​)4、根是植物非常重要的组成部分。根可以将植物牢牢地（   ）在土壤中,同时又从土壤中吸收植物生长所必需的（  ）和（   ）供植物生长。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)5、由于功能改变引起的（    ）和（    ）都发生变化的(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)根称为变态根。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)5、从植物的根上长出来的（  ）叫做根芽。根芽出土后,经过移(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)植,可以成为独立的（  ）。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)二、选择题。(将正确答案的序号填在括号里)1、下列植物中属于直根系的是（   ）。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)A、葱B、萱草C、白菜(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)2、下列关于根系的说法正确的是（  ）(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)A、双子叶植物都是变态根。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)B、主根上有稠而密的小根叫做须根。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)C、根芽属于变态根(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)3、下列植物中,( )属于须根系。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)A、胡萝卜 B.小麦 C、菊(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)4、( )不是植物根的主要作用。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)A、固定植物   B、制造营养 C、吸收水分和养料(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)5、( )是植物的根。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)A、花生  B、土豆 C、萝卜(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)三、判断题。(正确的画“√",错误的画“×")(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)1、直根系是指植物的主根明显粗长,向下垂直生长侧根小于主根的根系。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)（  ）2、常见的变态根有贮藏根、支柱根以及呼吸根等。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)（  ）3、植物根的主要作用是固定植株。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)（  ）4、植物生长所需的全部营养都是根从土壤中吸收来的。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)（  ）5、菠菜的根是直根,风仙花的根是须根。(​http:​/​​/​mp.weixin.qq.com​/​s?__biz=MzI0MzM5NzE4Mw==&mid=2247503293&idx=4&sn=4235d16fc61542890bfdcf82d4c5ecb8&chksm=e96f2aedde18a3fb2df195f59cf17b3fdb99fff3960556fcb52899ed74c40d1f02ee5cfbab12&scene=21"\l"wechat_redirect"\t"_blank​)（  ）6、葱没有明显的粗根,但有许多细密小根，属于须根系。(​http:​/​​/​mp.we