exocarp

简明释义

英[ˈeksəʊkɑːp]美[ˈeksoˌkɑrp]

n. [植] 外果皮

英英释义

单词用法

同义词

反义词

例句

1.Objective:To study the effect of Ginkgo biloba exocarp polysaccharides(GBEP) on HL-60 cells in vitro.

目的：研究银杏外种皮多糖对体外HL-60细胞的作用。

2.Objective:To study the effect of Ginkgo biloba exocarp polysaccharides(GBEP) on HL-60 cells in vitro.

目的：研究银杏外种皮多糖对体外HL-60细胞的作用。

3.The exocarp contains only one layer of epidermal cells.

外果皮由一层表皮细胞构成。

4.The exocarp of the peach is smooth and fuzzy, providing a protective layer for the fruit.

桃子的外果皮光滑且有绒毛，为果实提供保护层。

5.In botany, the exocarp is the outermost layer of the pericarp, which is crucial for fruit protection.

在植物学中，外果皮是果皮的最外层，对于果实的保护至关重要。

6.The exocarp of the coconut is hard and fibrous, making it resistant to water and pests.

椰子的外果皮坚硬且纤维状，使其对水和害虫具有抵抗力。

7.During the fruit development, the exocarp changes color, indicating ripeness.

在果实发育过程中，外果皮的颜色发生变化，表明成熟度。

8.The exocarp of the orange is thick and pebbly, which helps protect the juicy segments inside.

橙子的外果皮厚而颗粒状，有助于保护内部多汁的果肉。

作文

In the study of botany, understanding the various parts of a fruit is crucial for grasping how plants reproduce and spread their seeds. One of the essential components of a fruit is the exocarp, which is the outermost layer of the pericarp. The exocarp serves as a protective covering for the fruit, often playing a significant role in the fruit's appearance and texture. For instance, in fruits like apples and peaches, the exocarp is the skin that we see and touch. This layer not only provides protection from pests and environmental factors but also influences the fruit's ripening process and its appeal to animals and humans alike. The exocarp can vary greatly among different species of plants. In some fruits, it is tough and leathery, while in others, it may be thin and delicate. The variation in the structure and composition of the exocarp can be attributed to the plant's adaptation to its environment. For example, fruits that are consumed by animals often have colorful and soft exocarps to attract attention, ensuring that the seeds within are dispersed effectively after consumption. This relationship between the exocarp and seed dispersal highlights the evolutionary significance of this part of the fruit. Moreover, the exocarp is not just a passive protector; it can also play an active role in the fruit's development. As the fruit matures, the exocarp may change in color and texture, signaling to potential consumers that the fruit is ripe and ready to eat. This transformation can be observed in many fruits, such as bananas, which change from green to yellow as they ripen. This process is vital for the survival of the species, as it encourages animals to consume the fruit and subsequently disperse the seeds over a wider area. In addition to its biological functions, the exocarp has cultural and economic significance. Many fruits with appealing exocarps are cultivated commercially and play a vital role in the global economy. For instance, the vibrant exocarp of strawberries makes them a popular choice for both consumers and farmers. The cultivation and sale of such fruits contribute significantly to agricultural revenues and provide livelihoods for many people worldwide. In conclusion, the exocarp is a fascinating and multifaceted component of fruit that serves numerous purposes. From protecting the seeds within to attracting consumers and aiding in seed dispersal, the exocarp plays a vital role in the life cycle of plants. Understanding this part of the fruit not only enhances our knowledge of botany but also allows us to appreciate the intricate relationships between plants, animals, and humans. As we continue to explore the world of botany, the exocarp will remain a key topic of interest, revealing insights into the wonders of nature and the complexities of plant life.

在植物学的研究中，理解水果的各个部分对于掌握植物如何繁殖和传播种子至关重要。水果的一个基本组成部分是外果皮，它是果皮的最外层。外果皮作为水果的保护覆盖层，通常在水果的外观和质地中发挥重要作用。例如，在苹果和桃子等水果中，外果皮就是我们看到和触摸到的皮肤。这一层不仅为水果提供了对害虫和环境因素的保护，还影响着水果的成熟过程以及它对动物和人类的吸引力。 外果皮在不同植物物种之间可能有很大的变化。在某些水果中，它是坚韧而皮革状的，而在其他水果中，它可能又薄又脆。外果皮的结构和成分的变化可以归因于植物对其环境的适应。例如，被动物食用的水果往往具有色彩鲜艳和柔软的外果皮，以吸引注意力，从而确保种子在被消费后有效传播。这种外果皮与种子传播之间的关系突显了这一水果部位的进化重要性。 此外，外果皮不仅是被动的保护者；它也可以在水果的发育中发挥积极作用。随着水果的成熟，外果皮可能会在颜色和质地上发生变化，向潜在消费者发出水果成熟和可以食用的信号。这一转变在许多水果中都可以观察到，例如香蕉，它们在成熟时从绿色变为黄色。这个过程对物种的生存至关重要，因为它鼓励动物食用水果，并随后将种子分散到更广泛的区域。 除了其生物功能外，外果皮还有文化和经济意义。许多具有吸引力的外果皮的水果被商业种植，并在全球经济中发挥着重要作用。例如，草莓鲜艳的外果皮使其成为消费者和农民的热门选择。这些水果的种植和销售对农业收入贡献显著，并为世界各地的许多人提供了生计。 总之，外果皮是水果中一个迷人且多方面的组成部分，具有多种用途。从保护内部种子到吸引消费者和帮助种子传播，外果皮在植物的生命周期中发挥着至关重要的作用。理解这一水果部分不仅增强了我们对植物学的知识，也让我们欣赏植物、动物和人类之间错综复杂的关系。随着我们继续探索植物学的世界，外果皮将始终是一个引人关注的主题，揭示自然奇观和植物生命复杂性的见解。