问题描述:
问题解答:
我来补答dong wu de xing tai jie gou he gong neng jie da ① . bei qi ② . sai gai ③ . wei qi ④ . ce xian ⑤ . tun qi ⑥ . xiong qi ⑦ . fu qi ji yu dui shui sheng sheng huo shi ying de te dian you :a . shen ti cheng suo xing b . yong sai hu xi c . yong qi yun dong d . ti biao zhan hua deng ji yu de shen ti bian er qie gao ,tou bi jiao xiao ,bei bu an dan ,fu bu fa bai se qian ,wen dun ,mei you yu xu ,yu lin jiao xiao 。ji yu ti se zhu yao shi hui se ,ru hui hei se de ti bei ,yin hui se de ti fu he hui bai se de qi "
ji yu de jie pou 】yu ge qi guan gong neng jie shao 04 : 05 【yu lei de chang yong shu yu yu yi ban ce liang 】ge bu fen ce liang qi shi lin shi qi ji qi tiao 06 : 4 6 【niu wa de nei bu jie pou 】shuang hui sui fa zai shang ge shi pin 03 : 2 8 【niu wa de jie pou shuang hui sui fa 】da xue sheng ji dong wu xue shi yan 1 2 : 2 3 zhong guo dui xia jie pou ( da xue sheng " guan cha ji yu de nei bu jie gou 。di wu ye ,gong 1 3 ye 。xiao jie :1 、ji yu de xing tai 、jie gou yu gong neng xiang _ shi _ _ ying _ _ . 2 、ji yu de xing tai 、jie gou 、gong neng yu sheng huo huan jing xiang _ _ tong _ yi _ _ _ 。di liu ye ,gong 1 3 ye 。ji yu de sai "
观察鲫鱼的内部结构。第五页,共13页。小结:1、鲫鱼的形态、结构与功能相_适__应__. 2、鲫鱼的形态、结构、功能与生活环境相__统_一___。第六页,共13页。鲫鱼的鳃①鱼的体形成流线形,体表有粘滑的感觉,可以减少水的阻力. ②体表有鳞片具有保护作用;用鳃呼吸.鱼体内有侧线可以感知水流,测定方向为鱼的感觉器. ③鲫鱼的运动方式是游泳,用鳍游泳,靠尾部和躯干部的左右摆动来获得动力.
yu you hen duo te dian shi yu shui zhong sheng huo , ru yu de ti xing cheng suo xing , ti biao you zhan ye , you li yu jian xiao zai shui zhong you dong shi de zu li ; you ce xian , ke yi gan zhi shui liu fang xiang he gan zhi shui liu de zuo yong ; yu de shen ti chang you xiong qi 、bei qi 、fu qi he wei qi shi yu zai shui zhong de yun dong qi guan ; yu yong sai hu xi . 鲫鱼的身体扁而且高,比较小,背部暗淡,腹部发白色浅,吻钝,没有鱼须,鱼鳞较小。鲫鱼体色主要是灰色,如灰黑色的体背,银灰色的体腹和灰白色的鳍
鱼有很多特点适于水中生活,如鱼的体形呈梭形,体表有粘液,有利于减小在水中游动时的阻力;有侧线,可以感知水流方向和感知水流的作用;鱼的身体有胸鳍、背鳍、腹鳍和尾鳍是鱼在水中的运动器;鱼用鳃呼吸.动物的形态结构和功能解答①.背鳍②.鳃盖③.尾鳍④.侧线⑤.臀鳍⑥.胸鳍⑦.腹鳍鲫鱼对水生生活适应的特点有:a.身体呈梭形b.用鳃呼吸c.用鳍运动d.体表粘滑等
鲫鱼的解】与各器功能介绍04:05 【鱼类的常用术语与一般测量】各部分测量鳍式鳞式鳍棘鳍条06:46 【牛蛙的内部解】双毁髓法在上个03:28 【牛蛙的解双毁髓法】大学生技动物学实验12:23 中对虾解(大学生① yu de ti xing cheng liu xian xing , ti biao you zhan hua de gan jiao , ke yi jian shao shui de zu li . ② ti biao you lin pian ju you bao hu zuo yong ; yong sai hu xi . yu ti nei you ce xian ke yi gan zhi shui liu , ce ding fang xiang wei yu de gan jiao qi guan . ③ ji yu de yun dong fang shi shi you yong , yong qi you yong , kao wei bu he qu gan bu de zuo you bai dong lai huo de dong li .