Difference Between Vegetative and Generative Cell

关键区别 - 营养与生成细胞

被子植物正在生产封闭的开花植物seeds. Angiosperms contain flowers with male and female reproductive parts (stamens and pistilsrespectively). Stamens carrymale gametes雌蕊携带女配子为了sexual reproduction. Anantheris one part of the stamen, and it contains four花粉sacs. The process known asmicrosporogenesis形成花粉颗粒。花粉不被认为是男配子。它具有非生殖细胞和生殖细胞。花粉颗粒中的非生殖细胞称为营养细胞。在大多数开花植物中，可以看到一个营养细胞。生殖细胞被称为生成细胞。营养细胞负责形成通过雌蕊风格的花粉管的形成。生成细胞分裂并形成是开花植物的雄配子的精子细胞。这key differencebetween vegetative and generative cell is thatvegetative cell is non-reproductive while the generative cell is reproductive.

内容

1.Overview and Key Difference
2.What is a Vegetative Cell
3.What is a Generative Cell
4.Similarities Between Vegetative and Generative Cell
5.Side by Side Comparison – Vegetative vs Generative Cell in Tabular Form
6。概括

What is a Vegetative Cell?

这larger cell of the pollen grain is known as a vegetative cell or the tube cell. Vegetative cell is non-reproductive, and it forms the pollen tube once the pollen settles on the柱头of a flower. When pollen lands on the stigma, it absorbs moisture and begins to germinate by making the pollen tube through the style towards theovary. Vegetative cell is important in delivering male gametes into embryo sac for the doublefertilizationoccurs in flowering plants. Vegetative cell converts into an elongated tube-like structure. The vegetative cell contains细胞质和nucleus. It is larger compared to the generative cell. And the vegetative cell is surrounded by a thin, delicate wall known as intine.

这花粉tube grows until it meets embryo sac and then releases the sperm nuclei for合成.

What is a Generative Cell?

生成细胞是位于花粉颗粒内部的较小细胞。它是生殖的，它分裂了mitosisand produces two male gametes or two sperm cells. A thin wall known as intine separates the generative cell. In mature pollen grains, generative cell lies within the cytoplasm of the vegetative cell (generative cell passes into the vegetative cell to go towards the embryo sac for the fertilization).

曾经，精子核进入大型粒植物，它们准备好用于合伙人或双施肥，以产生Azygote.

营养和生成细胞之间有什么相似之处？

• Both vegetative and generative cells are cells of the pollen grains.
• 这两个细胞对于开花植物的性繁殖都很重要。
• Both cells contain a nucleus.
• Both cells develop during the microsporogenesis.

营养和生成细胞有什么区别？

Vegetative vs Generative Cell
Vegetative cell is one type of cell in pollen grains which is non-reproductive and responsible for pollen tube formation.	这generative cell is one type of cell in pollen grain which is reproductive and responsible for the formation of sperms.
Reproductive Ability
Vegetative cell is non-reproductive.	这generative cell is reproductive.
Size
Vegetative cell is larger than a generative cell.	这generative cell is smaller compared to the vegetative cell.
功能
Vegetative cell forms a pollen tube to deliver male gametes to embryo sac.	生成细胞形成精子细胞或男配子。

概括– Vegetative与生成细胞

微孢子形成是形成花粉粒和男配子的过程。在第一个花粉有丝分裂期间，花粉内部产生两个不等的细胞。它们被称为营养细胞和生成细胞。营养细胞是非生化的较大细胞。较小的细胞是生殖的生成细胞。营养细胞形成一种细长的结构，称为花粉管。通过花粉管，雄配子被输送到胚囊中以进行施肥。生成的细胞核分裂并形成两个雄配子核，它们与雌性配子在胚胎囊中结合在一起。这是营养和生成细胞之间的差异。

Download the PDF Vegetative vs Generative Cell

You can download PDF version of this article and use it for offline purposes as per citation note. Please download PDF version hereDifference Between Vegetative and Generative Cell

Reference:

1.EGG3。“花粉的发展。”莱斯特大学，2009年10月7日。Available here
2.“Double fertilization.” Wikipedia, Wikimedia Foundation, 5 Jan. 2018.Available here
3.“植物生命。”被子植物生命周期。Available here

Image Courtesy:

1.’Misc pollen colorized’By Dartmouth Electron Microscope Facility, Dartmouth College – Source and public domain notice at Dartmouth Electron Microscope Facility ([1], [2]), (Public Domain) viaCommons Wikimedia
2.’Angiosperm生命周期图-en’由Ladyofhats Mariana Ruiz-自己的作品（公共领域）通过Commons Wikimedia