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

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1、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

2、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

3、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 HM10J8O9

4、L10J6 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

5、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 ZG6L2Q

6、5V9A1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

7、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:CG

8、9R6F2P7I2 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:CG9R6F2P

9、7I2 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 HM

10、10J8O9L10J6 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：

11、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

12、 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 ZG6L2

13、Q5V9A1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

14、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:C

15、G9R6F2P7I2 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:CG9R6F2

16、P7I2 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 H

17、M10J8O9L10J6 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 HM10J8O

18、9L10J6 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

19、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:CG9R6F

20、2P7I2 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

21、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 HM10J8

22、O9L10J6 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 HM10J8O9L10J

23、6 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 ZG6L

24、2Q5V9A1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 ZG6L2Q5V9A

25、1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:

26、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

27、，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

28、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 HM10J8O9L10

29、J6 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 ZG6

30、L2Q5V9A1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 ZG6L2Q5V9

31、A1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

32、: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:CG9R6

33、F2P7I2 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

34、 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

35、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

36、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

37、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 ZG6L2Q5

38、V9A1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

39、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:CG9

40、R6F2P7I2 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:CG9R6F2P7

41、I2 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 HM1

42、0J8O9L10J6 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 HM10J8O9L

43、10J6 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

44、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 HM10J8O9L1

45、0J6 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 ZG

46、6L2Q5V9A1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 ZG6L2Q5V

47、9A1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

48、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:CG9R

49、6F2P7I2 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:CG9R6F2P7I

50、2 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