推荐回答(4个)
高等植物细胞特点:
真核细胞是构成高等植物体的基本单位,但一株绿色植物不同组织器官的细胞,其大小、形态及内部细胞器分化程度、数目等都存在差别,在此以薄壁细胞为代表(图1-1),介绍植物细胞的结构特点。表1-1 植物细胞内亚细胞颗粒的大小与数目. 成熟的薄壁细胞如叶肉细胞,中央往往是一个大液泡,在其周围有透明的浆状物,叫细胞质。细胞质中悬浮着一个体积较大的圆球状细胞核,数十至数百个椭圆形、呈绿色的叶绿体,还有数目更多、体积更小的线粒体以及其它各种形状的有膜或无膜的细胞器。网状结构的内质网,内连核外膜,外接细胞质膜(plasma membrane),常常充当了细胞内物质运转的"桥梁"。细胞器、细胞质基质以及其外围的细胞质膜合称为原生质体(protoplast)。原生质体外有一层坚牢而略有弹性的细胞壁。在植物组织里还可观察到一个细胞的原生质膜突出,穿过细胞壁与另外一个细胞的原生质膜连在一起,构成相邻细胞的管状通道,这就是胞间连丝。大液泡、叶绿体和细胞壁是植物细胞区别于动物细胞的三大结构特征。高等植物的亚细胞组成可由表1-1和图1-2大致表示。
细胞核、线粒体和质体具有双层细胞膜(cell membrane)。它们都具有各自的遗传物质,可以进行自我增殖。线粒体和质体的遗传物质可编码自身所需的部分蛋白质,但大部分的蛋白质仍需核遗传物质编码,在细胞质中形成多肽链再进入线粒体或质体,故这两种细胞器仍受核的支配。有的细胞器(如微管、核糖体)没有膜包裹,但它们仍以明显的形状与周围的细胞基质相区别,并且也都能行使独特的生理功能。其余细胞器则多以单层膜与细胞质分开。
http://www.d3kt.cn/news/20057/show50663_3.htm
植物细胞有细胞壁、液泡、叶绿体;
动物细胞低等的植物细胞有中心体
动物细胞有中心体。
植物细胞有细胞壁、液泡、叶绿体,低等的植物细胞也有中心体。
二者最大的区别在于有无细胞壁。
动物.没有细胞壁.中心体 液泡 叶绿体
植物则有
低等植物有 中心体
高等的没有
看看高中课本细胞那章..
自己总结一下..效果会很好
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