endodermis

简明释义

英[ˌendəʊˈdɜːmɪs]美[ˌendoˈdɜːrmɪs]

n. 内皮

英英释义

单词用法

同义词

反义词

例句

1.Endodermis the innermost part of the cortex, consisting of a single layer of cells that controls the passage of water and solutes between the cortex and the stele.

内皮层：是皮层的最内层，仅有一层细胞，可以控制皮层和中柱之间水和溶质的通过。

2.In treatment group, the vacuoles in syncytiotrophoblast cell cytoplasms were reduced, the surface microvilli were increased and the endodermis cell organelles of the capillary were recovered.

治疗组合体滋养细胞胞浆空泡减少、表面微绒毛增加，毛细血管内皮细胞细胞器基本恢复正常。

3.The endodermis is discovered in the stems of three species except Clinopodium chinense. Casparian strips is most conspicuous on the walls of the endodermis.

发现断血流、剪刀菜和光风轮的茎都有内皮层，凯氏点或凯氏带也非常明显。

4.The basis of pathology of vod is thought resulting from injury of hepatocytes and endodermis cells surrounding the central veins in zone3of the liver acinus by regimen-related toxicity.

病理基础是预处理毒性引起肝脏内肝小叶3区内的血窦内皮细胞以及肝细胞损害所致。

5.The inner layer of the cortex differentiates into the endodermis.

皮层的内层分化为内皮层。

6.Stele the vascular tissue and associated parenchyma tissue and (if present) the surrounding pericycle and endodermis of a stem or root.

包括根或茎的维管组织及相关薄壁组织，若有维管束鞘和内皮包被则这二者也属于中柱结构。

7.The function of the endodermis is to regulate the flow of water and nutrients into the vascular system of plants.

内皮层的功能是调节水分和养分进入植物的维管系统。

8.In some plants, the endodermis acts as a barrier to prevent harmful substances from entering the roots.

在某些植物中，内皮层充当屏障，防止有害物质进入根部。

9.The endodermis is located just inside the cortex of the root.

内皮层位于根的皮层内部。

10.During the study, we observed how the endodermis helps in the absorption of minerals.

在研究中，我们观察到内皮层如何帮助矿物质的吸收。

11.The Casparian strip found in the endodermis plays a crucial role in controlling water movement.

内皮层中的卡萨帕里条带在控制水分运动中起着至关重要的作用。

作文

The plant kingdom is a fascinating realm filled with diverse structures and functions that enable plants to thrive in various environments. One of the key components of plant anatomy is the root system, which plays a crucial role in nutrient and water absorption. Among the various layers of cells in the roots, the endodermis is particularly significant. The endodermis (内皮层) serves as a selective barrier, regulating the flow of water and nutrients from the soil into the vascular system of the plant. This layer of cells is located just inside the cortex and surrounds the vascular tissue, ensuring that only essential substances are allowed to pass through. Understanding the function of the endodermis is vital for comprehending how plants adapt to their environment. The endodermis contains specialized cells that have a unique structure, often characterized by a Casparian strip—a band of suberin that encircles the cell walls. This strip acts like a gatekeeper, preventing harmful substances from entering the plant while allowing beneficial minerals and water to pass through. This selective permeability is essential for maintaining homeostasis within the plant’s internal environment. In addition to its protective function, the endodermis also plays a role in the overall health of the plant. When the endodermis is functioning properly, it helps to ensure that the plant receives the necessary nutrients to grow and develop. If the integrity of the endodermis is compromised, it can lead to nutrient deficiencies and adversely affect the plant's growth. For example, if a plant is exposed to high levels of salinity or toxic substances, the endodermis can prevent these harmful elements from entering the vascular system, thus protecting the plant from potential damage. Moreover, the endodermis is not just important for water and nutrient regulation; it also plays a role in the plant's response to environmental stressors. Studies have shown that the endodermis can alter its permeability in response to changes in soil moisture levels, allowing the plant to conserve water during drought conditions. This adaptability is crucial for survival in fluctuating environments and highlights the remarkable capabilities of plant structures. In conclusion, the endodermis is a vital component of plant anatomy that serves multiple functions, including nutrient regulation, protection against harmful substances, and adaptation to environmental stresses. Understanding the role of the endodermis enhances our knowledge of plant biology and ecology, illustrating how even the smallest structures can have profound impacts on the health and survival of plants. As we continue to explore the intricacies of plant life, the endodermis remains a fascinating subject of study, revealing the complex interactions between plants and their environments.

植物王国是一个迷人的领域，充满了多样的结构和功能，使植物能够在各种环境中生存。根系是植物解剖学的一个关键组成部分，它在营养和水分吸收中发挥着至关重要的作用。在根部的各个细胞层中，endodermis（内皮层）尤其重要。endodermis作为一种选择性屏障，调节着来自土壤的水分和营养物质流入植物的维管系统。这一细胞层位于皮层内部，包围着维管组织，确保只有必要的物质能够通过。 理解endodermis的功能对于理解植物如何适应环境至关重要。endodermis含有特殊的细胞，具有独特的结构，通常以卡萨帕条带为特征——一种环绕细胞壁的木栓带。这个条带就像一个守门人，防止有害物质进入植物，同时允许有益矿物质和水分通过。这种选择性通透性对于维持植物内部环境的稳态至关重要。 除了保护功能外，endodermis还对植物的整体健康起着重要作用。当endodermis正常运作时，它有助于确保植物获得生长和发展的必要营养。如果endodermis的完整性受到损害，可能会导致营养缺乏，影响植物的生长。例如，如果植物暴露在高盐度或有毒物质中，endodermis可以阻止这些有害元素进入维管系统，从而保护植物免受潜在损害。 此外，endodermis不仅对水分和营养调节重要；它在植物应对环境压力方面也发挥着作用。研究表明，endodermis可以根据土壤湿度水平的变化改变其通透性，从而使植物在干旱条件下节约水分。这种适应能力对于在变化的环境中生存至关重要，并突显了植物结构的非凡能力。 总之，endodermis是植物解剖学的重要组成部分，具有多重功能，包括营养调节、对有害物质的保护以及对环境压力的适应。理解endodermis的作用增强了我们对植物生物学和生态学的认识，说明即使是最小的结构也能对植物的健康和生存产生深远的影响。随着我们继续探索植物生命的复杂性，endodermis仍然是一个引人入胜的研究主题，揭示了植物与其环境之间复杂的相互作用。