2022年2018苏教版生物八年级下册21.5《鸟类的生殖与发育》word教案 .pdf

名师精编优秀教案第五节 鸟类的生殖与发育教学目标知识目标：1、描述鸟类的生殖与发育过程；2、举例说出常见的早成鸟和晚成鸟。能力目标：1、培养学生观察、探究的能力；2、培养学生表达交流的能力。情感目标：1、通过介绍鸟类育雏的行为，培养学生对父母的感激之情。2、培养学生关爱鸟类的情感。教学重点、难点依据新课程标准鸟的生殖和发育过程制定教学重点为：1、描述鸟的生殖与发育过程；2、说出鸟卵的发育依据学情学生对青蛙的变态发育基础上，对鸟类的生殖与发育过程；说出常见的早成鸟和晚成鸟。更好理解分析教学难点：观察鸡卵发育过程教学方法:实验探究、归纳总结学情分析：学生对青蛙的变态发育基础上，对鸟类的生殖与发育过程；说出常见的早成鸟和晚成鸟。更好理解。1、学生课前观察鸡卵的结构2、有条件的同学可观察鸡的成长教师准备：相关图片、影视资料、培养器等。学生准备：生、熟鸡蛋。教学过程：名师精编优秀教案内容导入鸟类的生殖求偶教师述：同学们，我们一起来朗读一首大家很熟悉的古诗，自居易的钱塘湖春行述：诗中提到了“几处早莺争暧树，谁家新燕啄春泥”这描述的是什么样的情景呢？述：筑巢是很多鸟类在生殖过程中必不可少的一步，今天我们就共同来学习鸟类的生殖发育。述：鸟类的生殖一般都具有明显的季节性，生活在我国的鸟类一般的春秀或夏季生殖。问：那么一般来说鸟类每年要生殖几次呢？问：大家回忆一下你见过或听说过的鸟类，它们的生殖过程有哪些步骤呢？（求偶筑巢交配交卵孵卵育雏）述：下面我们就逐一来看这些步骤述：鸟类的求偶形式多样，大家想想，你知道鸟类有什么样的求偶方式？（羽毛、鸣叫、动作、“婚装”等）述：当鸟儿找到自己的伴侣后，它们就要为自己建造一个“家”，就是鸟巢。学生朗读（鸟 类 的 筑 巢 行为）答：一次思考交流讨论交流讨论文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1名师精编优秀教案筑巢交配产卵育雏、早成鸟、晚成鸟问：鸟巢有什么作用呢？）使鸟卵聚集在一起，同时被孵化；遮风挡雨，降温，减少热量散失；位置隐蔽，且有伪装，安全；刺激排卵、认巢不认卵等述：有了家，发育成熟的雌、雄鸟就要进行交配。问：鸟类的受精方式和前面讲的两栖类一样也是体外受精吗？述：受精的鸟卵要等产出以后才开始发育吗？（在 鸟体内即开始发育）问：当鸟卵被产出后，胚胎是否继续发育？（外界温度低，胚胎暂停发育）问：要怎样才能继续发育呢？（雌鸟体温或人工孵化箱恒温孵华）述：这也就是孵卵的过程述：有这样一句歇后语：“二十一天孵不出的蛋坏蛋”说的就是鸡卵孵化的时间，二十一天。述：在适宜的条件下，胚胎发育成熟，雏鸟最终破壳而出。述：孵出的雏鸟，有一些（如小鸡、小鸭）一出生就能站立，全身布满绒羽（细小柔软用于保温），这些叫早成鸟述：而且早成鸟在一出生就能跟随亲鸟自行觅食讨论交流回答（鸟类进行体内受精）答：不是答：不是（鸭、鹅、大雁）交流答：晚成鸟文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1名师精编优秀教案鸡卵的结构问：你知道哪些早成鸟？述：相反的，还有一些鸟孵化出来腿、足无法站立，眼睛没有睁开，身上绒羽非常少，全身几乎裸露，这些鸟叫什么？述：家鸽、燕子、麻雀等属于晚成鸟述：对于晚成鸟，其亲鸟就要负担起为幼鸟喂食（半个月-8 个月）的重任。亲鸟常常不辞辛劳一趟一趟地为小鸟喂食，只要小鸟张开口，亲鸟一定为其送上食物。而很多鸟也有“反哺”的现象，亲鸟老了之后，小鸟为它们捕食。述：晚成鸟在哺充后代的同时，也消灭了大量的害虫。述：我们已经了解了鸟类生殖和发育的全过程，是不是所有的鸟都要经历这些发育阶段呢？问：哪些阶段是鸟类生殖和发育必经的阶段？述：现在我们就来看一种既不筑巢，产卵后不孵卵，更不育雏的鸟杜鹃（视频）演示实验准备生熟鸡蛋各一，生鸡蛋打入培养器（实物投影）述：大家来观察一下鸡卵的外部形态和内部结构，思考一下鸡卵包括了哪些结构？外：卵壳（卵壳膜2 层）答：不是回答：求偶、交配、产卵文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 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HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1名师精编优秀教案内：卵白、卵黄、卵盘（鸡蛋中的小白点）气空、卵带述：鸟卵卵黄上的小白点叫做胚盘，其中含有细胞核，胚盘是进行胚胎发育的部位。胚盘、卵黄及卵黄膜共同构成卵细胞，卵黄为胚胎发育提供养料，卵白及卵壳都可保护卵细胞，卵白为胚胎发育提供所需水分格养料。资料：成熟卵通过输卵管前端的喇叭口进入输卵管，受精作用发生于输卵管上端。在受精卵于输卵管内下行的过程中，依次被输卵管壁所分泌的蛋白、壳膜和卵壳所包裹。卵在输卵管中移动时，由于管壁肌肉的蠕动而旋转，逐渐被包裹以均匀的蛋白层，两端稠蛋白层随着扭转而成系带。被系带所悬挂着的卵黄，由于重力而使胚盘永远朝上，有利于孵化。卵壳为CaCO3（89%-97%）及少数盐类和有机物，表面有数千小孔，保让孵化时的气体交换。花纹蛋，输卵管最下端管壁的色素cell在产卵前5h 分泌。述：鸡卵需经过21 天的孵化过程，我们一起来见证一下这个过程。观看图片：鸡胚胎的发育。完成观察讨论交流总结：鸟类的生殖与发育、早成鸟和晚成鸟反馈练习一、选择题1.秋天林区和公园的树干上，悬挂一些人工巢箱，是为了（）A.保护一些不会营巢的鸟类不会被冻死 B.招引食虫鸟类在巢箱中繁殖文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1名师精编优秀教案C.保护鸟类免受敌害 D.捕捉鸟类2.下列说法正确的是（）A.不是所有的鸟都有孵卵和育雏的行为 B.鸟类产的卵就是一个卵细胞新课标第一网C.母鸡产的卵都可以孵化出小鸡 D.家鸽的幼鸟在孵出后就会行走、觅食3鸟的受精卵结构中,将来发育成雏鸟的部位是()A.卵黄 B.卵白 C.胚盘 D.卵黄膜4鸡受精卵的发育开始于（）A母鸡体内 B鸡卵产出之后 C孵化时 D孵化一段时期之后5鸟受精卵的形成必须经过下列哪种繁殖行为（）A、求偶、交配 B、筑巢、产卵 C、孵卵、育雏 D、ABC全部6都能产硬壳卵的一项是（）A鸟类和爬行类 B鸟类和哺乳类 C鸟类和昆虫 D鸟类和两栖类7家鸽的卵产出后，胚胎发育暂时停止，要使胚胎继续发育，必须有()A.适宜的温度 B.充足的养料 C.一定的水分 D.充足的空气8鸟卵中的细胞核，位于以下哪种结构中？A、卵白 B、卵黄 C、气室 D、胚盘 ()9孔雀开屏属于哪类繁殖行为（）A、求偶行为 B、筑巢行为 C、产卵行为 D、交配行为10取鸡蛋1 枚，把它的钝端埋在盛有黄砂的烧杯内（约埋入1/2），把烧杯放在垫有石棉网的三脚架上，用酒精灯加热。待黄砂热后，在蛋壳上会出现点点小水珠，这证明蛋壳上有许多 _，其作用是 _。二、非选择题1、下图为鸟卵的解剖结构，据图回答：（1）卵黄上的白色小点1 叫做 _。在发育过程，1 是形成 _的部位。（2）2 是_、3 是_，两 者 与 1共 同 构 成 了 一 个 _。（3）能 够 为 胚 胎 发 育 提 供 养 料 的 是 _和 _。（4）刚孵出的雏鸽_羽毛，属于文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1名师精编优秀教案鸟。2、鸡、鸭、鹅和鸽子四家是邻居，最近这四位妈妈都在忙着孵卵，她们希望将来的孩子们能成为好朋友，刚出壳的小鸭和小鸡成为了好朋友，它们相约去找小鹅，在小鹅家门口叫了几声，小鹅就出来了。它们一起游戏，一起散步；有一天它们的妈妈去看鸽妈妈，它们也相约去找小鸽子，可喊了好久，也不见小鸽子出来，它们很生气，抱怨道：“小鸽子太傲气了！以后我们不找它玩儿了。”你觉得小鸡它们的抱怨对吗？请说说理由。板书设计：第五节鸟类的生殖与发育一、鸟类的生殖与发育1、求偶筑巢交配产卵孵卵育雏2、鸡卵的结构二、早成鸟和晚成鸟教学反思：文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10J8O9L10J6 ZG6L2Q5V9A1文档编码:CG9R6F2P7I2 HM10