• Sketchite
Sketchite

34．鸟类的繁殖大多在春天进行的具有时间为一年的性�期下图为此鸟体内一个性�期的激素调节过程请据图回答下列问题 �鸟类的繁殖是一种先天 Template






Link:
sketch 5269
sketch 1470
sketch 4970
sketch 819
sketch 4685 Dave Mustaine by Erika Ishikawa
sketch 2017 HEYOO
sketch 4582 Pikachu by Mariana Sanchez Acevedo
sketch 5156 Angry Bird by Roberto Castro Colimil

You need a modern browser try chrome, to view this.
Background image: Hide Show

View Larger Image Image Credit: 1010jiajiao.com

sketch 1477 123 viva l 'algerie
sketch 4997 Rafael Leite Jose Rondon
sketch 3479
sketch 1199
sketch 811
sketch 5123
sketch 5173 Super Meat Boy by Zorka Edding Giustinianovic
sketch 4454 Lisa by Muhammad Raiyaan





Try and sketch some of theseBerries, Flea, Sad girl, Baloney, Script, Toboggan, Cards, Flute, King, Crown, view more ideas


please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?
view like
sketch #3300
anonymous
anonymous
sketch #3300

view like
sketch #4475 Daft Punk by Reggie Garcia
anonymous
anonymous
sketch #4475 Daft Punk by Reggie Garcia

view like
sketch #4691 Itachi by Jaqueline Salazar
anonymous
anonymous
sketch #4691 Itachi by Jaqueline Salazar

view like
sketch #3259
anonymous
anonymous
sketch #3259

view like
sketch #5268 Harley Quinn by 조바다
anonymous
anonymous
sketch #5268 Harley Quinn by 조바다

view like
sketch #5168
anonymous
anonymous
sketch #5168

view like
sketch #3939
anonymous
anonymous
sketch #3939

view like
sketch #5165 Marceline by Marvin Chrome
anonymous
anonymous
sketch #5165 Marceline by Marvin Chrome

view like
sketch #245 Fishy
Lucy Barnard
sketch #245 Fishy

view like
sketch #68512
anonymous
anonymous
sketch #68512

view like
sketch #3447 Hidan (Akatsuki) by ßeyza Karaca
anonymous
anonymous
sketch #3447 Hidan (Akatsuki) by ßeyza Karaca

view like
sketch #83

view like
sketch #4 Nirvana Smiley
Tom Kelly
sketch #4 Nirvana Smiley

view like
sketch #1260
anonymous
anonymous
sketch #1260

view like
sketch #4388 Homer and the Cherry
anonymous
anonymous
sketch #4388 Homer and the Cherry

view like
sketch #4520
anonymous
anonymous
sketch #4520

view like
sketch #5276
anonymous
anonymous
sketch #5276

view like
sketch #4722 Ichigo by Gopal Gopi
anonymous
anonymous
sketch #4722 Ichigo by Gopal Gopi

view like
sketch #2549
anonymous
anonymous
sketch #2549

view like
sketch #5127 Captain America by Mark Phillips
anonymous
anonymous
sketch #5127 Captain America by Mark Phillips

view like
sketch #286 sun
anonymous
anonymous
sketch #286 sun

view like
sketch #4888
anonymous
anonymous
sketch #4888

view like
sketch #4306 The burning watermelon!
anonymous
anonymous
sketch #4306 The burning watermelon!

view like
sketch #3999 Deadmau by Speeð Üp Säm
anonymous
anonymous
sketch #3999 Deadmau by Speeð Üp Säm

view like
sketch #3538
anonymous
anonymous
sketch #3538

view like
sketch #5206
anonymous
anonymous
sketch #5206

view like
sketch #4995
anonymous
anonymous
sketch #4995

view like
sketch #1519
anonymous
anonymous
sketch #1519

view like
sketch #2318
anonymous
anonymous
sketch #2318

view like
sketch #3232
anonymous
anonymous
sketch #3232

tomski34．鸟类的繁殖大多在春天进行的具有时间为一年的性�期下图为此鸟体内一个性�期的激素调节过程请据图回答下列问题 �鸟类的繁殖是一种先天 coloring
view template
为什么这两个雄性会一起去求偶？它们到底是什么关系？是友谊吗？ 研究 sketch template
view template
第十九章 鸟纲（Aves） 普通动物学 地理教师 sketch template
view template
12．鸟类的繁殖大多在春天进行的具有时间为一年的性期下图为某一鸟类体内一个性期的激素调节过程下列说法正确的是 A．在繁殖季节 sketch template
view template
解码鸟类的歌声——鸟类鸣声浅谈 知乎 sketch template
view template
研究揭示驱动鸟类亲本哺育性别参与角色的机制 中国学院 sketch template
view template
山东青岛：水鸟繁殖季 珍稀鸟类湿地“入镜” 人图片 sketch template
view template
鸟类的繁殖大多在春天进行性期为一年．如图表示在一个性期过程中某种鸟体内的激素调节过程．下列相关叙述正确的是 A鸟类的这种激素 sketch template
view template
Science Advances刘阳教授团队在鸟类对于气候变化响应的研究中取得新进展 中山大学生态学院 sketch template
view template
春天日照逐渐延长时鸟类大多进入繁殖季节调节鸟类繁殖活动的图解如下请回答 1鸟类的繁殖活动是通过机体的 神经调节和 两种调节方式完成的 sketch template
view template
为什么要“劝君莫打三春鸟” 知乎 sketch template
view template
鸟类的繁殖大多在春天进行的具有时间为一年的性期下图为雌鸟体内一个性期中的激素调节过程请对图仔细分析后回答下列问题 1鸟类大多在 sketch template
view template
2．鸟类的繁殖大多在春天进行性期为一年下图表示为在一个性期过程中某种鸟体内的激素调节过程下列说法正确的是A A．在繁殖季节适宜的 sketch template
view template
麻雀身体部位结构图 千图 sketch template
view template
鸟类基础知识（2）吸系统与声器官 知乎 sketch template
view template
鸟纲分类实验 sketch template
view template
“鸟类的起源”研究入选《学》杂志2014年度十大学突破 神秘的地球 学自然地理探索 sketch template
view template
走进鸟的世界 ——多样的喙陕西自然博物馆 sketch template
view template
鸟的内脏解剖图 千图 sketch template
view template
鸟类的解剖图 千图 sketch template
view template
鸟类适于飞行的特征 蓝色动物学（中国动物学普） sketch template
view template
鸟 360百 sketch template
view template
13．如图是家鸽吸结构图请据图作答1在家鸽的体内有许多气囊它们在吸中能起到辅助吸的作用它们使鸟类在吸的过程中每吸一次 sketch template
view template
动物飞行 搜狗百 sketch template
view template
动物所进行的一系列有利于它们生存和繁殖后代的活动都是动物的行为． ．——青夏教育精英家教—— sketch template
view template
题目如图为表示生物进化大致历程的进化请据图回答下面的问题1在生理上动物类群的繁殖方式最主要的特征是 植物类群在繁殖方式上 sketch template
view template
填图题1图中8 11所指部位的名称依次为左心房左心室右心房和右心室．2图中4瓣膜使血液只能从心室流动脉图中5房室瓣使血液只能 sketch template
view template
右图为表示生物进化大致历程的进化请据图回答下面的问题1在生理上动物类群的繁殖方式最主要的特征是 植物类群在繁殖方式上比植物类 sketch template
view template
题目与鱼类两栖动物和爬行动物相比鸟类独有的特征是 A 用肺吸 B 体内受精 C 陆地产卵 D 体温恒定 题目和参考答案 sketch template
view template
2．根据图示描述青蛙的生殖与育过程回答下列问题 1每年春季雌雄蛙抱对后雌蛙将卵细胞排到水中雄蛙接着将精子排到水中卵细胞和精子 sketch template
view template
春天的手抄报简单漂亮白图文简单（漂亮17张） 手抄报图片大全 sketch template
view template
DNA主要分布在 中RNA大部分存在于 中甲基绿和毗罗红两种染色剂对 不同甲基绿使DNA现 毗罗红使RNA现 在此实——青夏教育 sketch template
view template
要将视野左上方的物像移到视野中央装片移动的方应为 A．左 B．右 C．左上方 D．右下方——青夏教育精英家教—— sketch template
view template
答题要点雄蛙在生殖季节出鸣叫这是一种繁殖行为是在求偶在水稻开花的季节正是需要较多水量的时候青蛙在这个时期进行生殖说明青蛙的生殖 sketch template
view template
题目研究人用野生一粒小麦与山羊草杂交获得野生二粒小麦过程如下图所示1野生一粒小麦与山羊草 同一物种判断依据是 2培育野生 sketch template
view template
春天和日照逐渐延长时鸟类大多进入繁殖季节鸟类繁殖活动图解如下提示下丘和垂体对性腺和甲状腺分泌活动的调节机理相似请回答1鸟类 sketch template