Thekey differencebetween anatropous and orthotropous ovule is that解剖是最常见的ovuleorientation in angiosperms in which the ovule is completely inverted in 180oso that themicropyle和hilumcome closer to each other. Meanwhile, orthotropous is an ovule orientation in which the micropyle lies directly in line with the hilum.
卵巢是女性开花植物生殖系统的主要部分。它包含女性生殖细胞或胚珠。胚珠通过称为Funicle的细长茎连接到卵巢的内壁。胚珠与其菜单的附着点是Hilum。胚珠有两个主要部分作为核和外皮。微拷贝是外皮中的一个小开口,可让花粉管进入胚珠内。基于微拷贝和胚珠方向相对于菜单的位置,有五种类型的胚珠,如正交或萎缩,不足,肺部,弯曲,两性肺部和半肌。
内容
1.Overview and Key Difference
2.What is an Anatropous Ovule
3.What is an Orthotropous Ovule
4.不足和正交胚珠之间的相似性
5.Side by Side Comparison – Anatropous vs Orthotropous Ovule in Tabular Form
6.概括
What is an Anatropous Ovule?
The anatropous ovule is a completely inverted ovule through 1800。因此,微米和hilum彼此靠近。因此,微粒靠近真实。胚珠的身体与一侧的曲拟合融合在一起。
Moreover, this is the most common ovule orientation in flowering plants. In more than 80% of angiosperms, anatropous ovules can be seen. Therefore, in most双子植物和单子叶植物,解剖胚珠很常见。
What is Orthotropous Ovule?
正性胚珠是种子植物中看到的另一种类型的胚珠取向。在这种方向上,微拷贝直接位于Hilum的线上。因此,在同一条线中发现了微拷贝,chalaza和Funiculus。
The ovule is straight. Hence, the micropyle is located at the apex. Orthotropous ovules are commonly seen in the plant families: Polygonaceae and Piperaceae. Therefore, compared to anatropous ovules, orthotropous ovules are less abundant.
What are the Similarities Between Anatropous and Orthotropous Ovule?
- Anatropous and orthotropous ovule are two of the five types of ovules seen in seed plants.
- They can be seen in seed plants.
解剖和正交胚珠之间有什么区别?
Anatropous is the most common ovule orientation seen in angiosperms in which the ovule is completely inverted in 180o因此,微米和Hilum彼此之间越来越近。另一方面,正骨是胚珠方向,其中微拷贝直接与Hilum保持一致。因此,这是解剖和正性胚珠之间的关键区别。此外,在大多数双子植物和单子叶植物中都可以看到解剖胚珠,而在植物家族的多边形科和哌啶科中可以看到正交胚珠。
Moreover, the anatropous ovule is completely inverted through 180 degrees. In contrast, the orthotropous ovule is completely straight. Also, in the anatropous ovule, the body of the ovule is fused on one side with the funiculus, while it is not fused with the funiculus in the orthotropous ovule. Furthermore, another difference between anatropous and orthotropous ovule is that in the anatropous ovule, micropyle is located at the bottom, near the funiculus while micropyle is seen at the apex in the orthotropous ovule.
Below is a comparison infographic on the difference between anatropous and orthotropous ovule.
概括– Anatropous vs Orthotropous Ovule
基于胚珠方向以及相对于hilum的胚珠的位置,是两种类型的胚珠,是两种类型的胚珠。解剖胚珠是通过180度的完全反转胚珠。因此,可以在底部看到微拷贝。另一方面,正性胚珠是完全笔直的胚珠。因此,可以在顶点上看到微粒。此外,微米和hilum直接位于正面胚珠的同一条线中。在大多数双子植物和单子叶植物中都可以看到解剖胚珠,而在多边形和哌啶科的植物科中则可以看到正交胚珠。因此,这是解剖和正交胚珠之间差异的摘要。
Reference:
1.“胚珠。”维基百科,维基梅迪亚基金会,2020年2月6日,Available here。
2. “Ovule.” Biology Dictionary, 29 Apr. 2017,Available here。
Image Courtesy:
1. “Ovule morphology anatropous” By biologia.edu.ar, Trace and Color: User:RoRo – biologia.edu.ar (Public Domain) viaCommons Wikimedia
2. “Ovule morphology orthotropous” By biologia.edu.ar. Trace and color: User:RoRo – biologia.edu.ar (Public Domain) viaCommons Wikimedia
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