• Sketchite
Sketchite

14．双受精是被子植物所特有的双受精是指 A．一个卵细胞和两个精子相融合b．两个精子分别与卵细胞和极核相融合c．一个精子和两个极核相融合 Template






Link:
sketch 2959 manga girl blue hair
sketch 1459 khvjkhu
sketch 2486 Face by sketchmaster
sketch 3321 Baby Mirella Flowers
sketch 3217
sketch 3483 Ginger
sketch 2620 goblin man
sketch 2751

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

View Larger Image Image Credit: 1010jiajiao.com

sketch 3254 derp
sketch 5263
sketch 4953 Bird by Ervin Haxhija
sketch 5347
sketch 4975 Orange by Marcos Roberto Molina
sketch 4983
sketch 5361 Emma Watson by Glynis June Williams
sketch 5200 Kristen Stewart by Rhemzkian Esturco





Try and sketch some of theseZipper, Igloo, Lollipop sucker, Welder, Cucumber, Quill, Pig, Moon, Bustle, Hedge, 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 #666
Tom Kelly
sketch #666

view like
sketch #4905 The Little Prince by Gaurav Patel
anonymous
anonymous
sketch #4905 The Little Prince by Gaurav Patel

view like
sketch #5341 Rafael Nadal by Alina Danielle
anonymous
anonymous
sketch #5341 Rafael Nadal by Alina Danielle

view like
sketch #2619 Underwater by sketchmaster
sketchmaster
sketch #2619 Underwater by sketchmaster

view like
sketch #3052
anonymous
anonymous
sketch #3052

view like
sketch #22
anonymous
anonymous
sketch #22

view like
sketch #5208 Alf by David Rossien
anonymous
anonymous
sketch #5208 Alf by David Rossien

view like
sketch #1170
anonymous
anonymous
sketch #1170

view like
sketch #3204 eminem
anonymous
anonymous
sketch #3204 eminem

view like
sketch #3321 Baby Mirella Flowers
anonymous
anonymous
sketch #3321 Baby Mirella Flowers

view like
sketch #4953 Bird by Ervin Haxhija
anonymous
anonymous
sketch #4953 Bird by Ervin Haxhija

view like
sketch #3392
anonymous
anonymous
sketch #3392

view like
sketch #4386 Freddie Mercury by Павел Павлов
anonymous
anonymous
sketch #4386 Freddie Mercury by Павел Павлов

view like
sketch #5018 Owl by Komlós László
anonymous
anonymous
sketch #5018 Owl by Komlós László

view like
sketch #3138 Papa Smurf by Courtney Spragg
anonymous
anonymous
sketch #3138 Papa Smurf by Courtney Spragg

view like
sketch #5325
anonymous
anonymous
sketch #5325

view like
sketch #894 hmmm
anonymous
anonymous
sketch #894 hmmm

view like
sketch #3517 Scratch from Ice Age by VlAd Craciun
anonymous
anonymous
sketch #3517 Scratch from Ice Age by VlAd Craciun

view like
sketch #4087 Stewie by Leon Soria Ricardo
anonymous
anonymous
sketch #4087 Stewie by Leon Soria Ricardo

view like
sketch #5169 Iron Man by Hannah Kellogg
anonymous
anonymous
sketch #5169 Iron Man by Hannah Kellogg

view like
sketch #4710
anonymous
anonymous
sketch #4710

view like
sketch #3192 Snake by Isaias Valenzuela Chaver
anonymous
anonymous
sketch #3192 Snake by Isaias Valenzuela Chaver

view like
sketch #2889
anonymous
anonymous
sketch #2889

view like
sketch #1453
anonymous
anonymous
sketch #1453

view like
sketch #778
Benjo Arellano
sketch #778

view like
sketch #4907
anonymous
anonymous
sketch #4907

view like
sketch #4778
anonymous
anonymous
sketch #4778

view like
sketch #1670
Saifa Mahmud
sketch #1670

view like
sketch #3268 Werewolf by Mert Arda Yiğit
anonymous
anonymous
sketch #3268 Werewolf by Mert Arda Yiğit

view like
sketch #3637
anonymous
anonymous
sketch #3637

tomski14．双受精是被子植物所特有的双受精是指 a．一个卵细胞和两个精子相融合b．两个精子分别与卵细胞和极核相融合c．一个精子和两个极核相融合 coloring
view template
14．双受精是被子植物所特有的双受精是指 A．一个卵细胞和两个精子相融合B．两个精子分别与卵细胞和极核相融合C．一个精子和两个极核相融合 sketch template
view template
什么是世代交替？ 知乎 sketch template
view template
为什么减数分裂要产生极体，这不是浪费能量和资源吗？ 知乎 sketch template
view template
14．双受精是被子植物所特有的双受精是指 A．一个卵细胞和两个精子相融合B．两个精子分别与卵细胞和极核相融合C．一个精子和两个极核相融合 sketch template
view template
14．双受精是被子植物所特有的双受精是指 A．一个卵细胞和两个精子相融合B．两个精子分别与卵细胞和极核相融合C．一个精子和两个极核相融合 sketch template
view template
被子植物的双受精作用 副本 Word文档在线阅读与下载 无忧文档 sketch template
view template
【同程微课初二生物——双受精 高清1080P在线观看平台 腾讯视 sketch template
view template
简述被子植物的雄配子体和雌配子体的结构及双受精与种子各结构形成的关系 百度知道 sketch template
view template
受精 360百 sketch template
view template
下图是被子植物受精作用和育过程示意图请据图回答下列问题 1如图中所示花粉管中的一个精子与6 结合后称为 将来育成 ——青夏 sketch template
view template
5．如图是被子植物双受精过程图据图回答问题1一朵花中产生花粉的结构是花蕊花粉落到柱头上受到柱头分泌黏液的刺激萌出花粉管．其中有 sketch template
view template
课程门户 章节详情 sketch template
view template
图是被子植物的受精过程1写出图中数字所代表的结构的名称花粉管子房壁珠被受精极核受精卵珠孔2草履虫进行分裂生殖菇进行 sketch template
view template
受精（植物）受精（植物）所屬現代詞，指的是兩種配子融合成為合子的過程。 百知識中文網 sketch template
view template
花粉管进入胚珠的路线是 A珠孔→柱头→花柱→子房B花柱→柱头→子房→珠孔C柱头→子房→花柱→珠孔D柱头→花柱→子房→珠孔 题目和 sketch template
view template
受精（植物） 百度百 sketch template
view template
花粉是配子吧？ 知乎 sketch template
view template
下面是绿色植物受精过程种子芽和植株结构示意图请认真观察图示并分析回答1绿色植物育的起点是 在图一 中形成的2受精卵 sketch template
view template
被子植物的受精过程依次是 精子与卵细胞中央细胞结合 花粉管伸入子房 花粉管进入胚珠 花粉粒萌出花粉管 花粉管顶端破裂释放出 sketch template
view template
题目读花的结构和双受精过程示意图据图分析回答问题1图1中的 和 与果实和种子的形成有直接关系它们是花的主要结构2图2中 sketch template
view template
3．被子植物的一生要经历生长育繁殖衰老和死亡等几个连续的过程种子的萌植株的生长开花与结果是其中重要的阶段根据以下图示回答 sketch template
view template
被子植物的起源 sketch template
view template
7．图是被子植物繁殖过程的示意图请根据所学的知识回答相关问题1花在植物体的结构层次上属于器官其结构中2和4与果实和种子的形成有直接 sketch template
view template
双受精 360百 sketch template
view template
18．如图是双受精过程示意图据图分析回答问题．1填写各部分名称A．子房壁B．珠被C．极核D．卵细胞E．花粉F．花粉管G sketch template
view template
受精的过程与部位 男学 天山医学院 sketch template
view template
百度教育 sketch template
view template
有性生殖就是由受精卵受精卵育新个体的生殖方式．无性生殖就是不经过两性生殖细胞两性生殖细胞的结合由母体母体直接产生新个体的生殖方式． 题目和 sketch template
view template
下图是某被子植物生活史简图请分析回答下列问题1被子植物的一生开始于 的形成．2图中→过程表示种子的萌该过程所需的外界条件是 sketch template
view template
图示植物的受精过程据图答题1花粉落到柱头上受到柱头分泌黏液的刺激萌出 其中有2个精子一个与 融合形成 另一个精子与一个 sketch template
view template
小孢子母细胞 360百 sketch template
view template
极核 搜狗百 sketch template
view template
卵子 智汇三农 sketch template
view template
下面是植物的有性生殖和育过程示意图请据图回答 1图中的 和 构成了花的雄蕊 21中的 ——青夏教育精英家教—— sketch template
view template
下列都属于无脊椎动物的一组是 A．蜜蜂 家兔B．河蚌 蛇C．乌贼 虾D．蜂鸟 珊虫 题目和参考答案——青夏教育精英家教—— sketch template