What is the Difference Between Cortex and Epidermis in Plants

Thekey difference在植物的皮质和表皮之间is that the cortex in plants is an unspecialized cell layer that lies between epidermis andvascular bundlesin stems and roots, while the epidermis in plants is a specialized cell layer that covers the leaves, flowers, roots, and stems of plants.

Cortex is the inner cell layer of plants that surrounds the vascular bundle. It contains unspecialized cells that later transform into specialized endodermis. Epidermis, on the other hand, is the outermost cell layer of plants. Moreover, the epidermis is replaced by the periderm during the次要增长of the stem and roots.

内容

1.Overview and Key Difference
2.什么是植物中的皮质
3.什么是植物中的表皮
4.Similarities – Cortex and Epidermis in Plants
5.皮质与表皮形式的表皮
6.摘要 - 植物中的皮质与表皮

什么是植物中的皮质?

Cortex is an unspecialized cell layer that lies between the epidermis and vascular bundles. Normally, it is quite large and extensive in roots. Cortex is also the surface layer of the non-fruiting part of the body of some lichens. The cortex is made up of thin-walled livingparenchymatous cells和leucoplasts. Leucoplasts convert sugar into starch grains.

Figure 01: Cortex

皮质外细胞获得不规则的增厚细胞壁，称为孔纹胶细胞。皮质外细胞也可能含有叶绿体。通常，皮层形成由软木组成的细胞层。皮层负责通过扩散将材料传输到根部的中央圆柱体中。此外，它也可以用于淀粉形式的食物储存。皮质的最内向层被称为内胚层。内胚层由一层桶形细胞组成。这些细胞在没有细胞内空间的情况下紧密排列。内皮细胞的径向壁增厚。这些墙被称为卡里亚斯条，以caspary的名字命名。 Caspary was the one who first discovered these radial walls. Furthermore, fruticose lichens have one cortex encircling the branches and flattened leaf-like forms. Foliose lichens have different upper and lower cortices. Crustose, placodioid, and squamulose lichens have an upper cortex but no lower cortex. Leprose lichens are a type of lichen that lacks any cortex.

什么是植物中的表皮?

植物的表皮是专门的细胞laye之类r that covers the leaves, flowers, roots, and stems of plants. It is a single layer of cells. Moreover, it forms the boundary between the internal and external environment. The cells are composed of thin walls. The outer walls of the epidermal cells are not cutinized. The epidermis of most leaves shows dorsoventral anatomy. This means the upper and lower surfaces have somewhat different construction and may have different functions. Furthermore, woody stems and some other stems in potato (potato tuners) produce a secondary covering called the periderm, which generates from the epidermis. Normally, many epidermal cells prolong to form long hairy bodies. The epidermis of the root is called the epiblema.

Figure 02: Epidermis in Plants

The epidermis has several functions. It protects against water loss, regulates gas exchange, absorbs water and mineral nutrients, secretes metabolic compounds, and protects against pathogens.

What are the Similarities Between Cortex and Epidermis in Plants?

Cortex and epidermis in plants are two plant cell layers.
两种细胞层都在植物中，动物不存在。
它们存在于茎和根中。

植物中皮质和表皮有什么区别？

Cortex in plants is an unspecialized cell layer that lies between the epidermis and vascular bundles in stems and roots, while epidermis in plants is a specialized cell layer that covers the leaves, flowers, roots, and stems of plants. Thus, this is the key difference between cortex and epidermis in plants. Furthermore, the cortex in plants consists of multiple cell layers, while the epidermis in plants consists of a single cell layer.

The below infographic presents the differences between cortex and epidermis in plants in tabular form for side by side comparison.

摘要 - 植物中的皮质与表皮

Cortex and epidermis in plants are two plant cell layers. Cortex in plants is an unspecialized cell layer that lies between the epidermis and vascular bundles in stems and roots, while epidermis in plants is a specialized cell layer that covers the leaves, flowers, roots, and stems of plants. So, this is the key difference between cortex and epidermis in plants.