coelomate

简明释义

英[ˈsiːləmeɪt]美[ˈsiləˌmet]

adj. 有体腔的

n. 体腔动物

英英释义

单词用法

同义词

反义词

例句

1.Coelomate has a body cavity containing the internal organs.

体腔动物拥有一个体腔包含内部器官。

2.Coelomate has a body cavity containing the internal organs.

体腔动物拥有一个体腔包含内部器官。

3.The classification of animals often distinguishes between coelomate 腔肠动物 and acoelomate organisms.

动物的分类通常区分腔肠动物和无腔动物。

4.Invertebrates such as earthworms are classified as coelomate 腔肠动物 due to their body cavity.

如蚯蚓等无脊椎动物因其体腔而被归类为腔肠动物。

5.The study of coelomate 腔肠动物 organisms provides insights into evolutionary biology.

对腔肠动物生物的研究为进化生物学提供了见解。

6.Understanding the anatomy of a coelomate 腔肠动物 helps in studying its physiological processes.

理解腔肠动物的解剖结构有助于研究其生理过程。

7.Many coelomate 腔肠动物 exhibit complex organ systems that allow for greater functionality.

许多腔肠动物展示出复杂的器官系统，允许更大的功能性。

作文

The animal kingdom is a vast and diverse realm, encompassing a wide variety of organisms that exhibit different structural and functional characteristics. Among these organisms, one important classification is that of the coelomate, which refers to animals possessing a true coelom. A coelom is a fluid-filled body cavity that lies between the digestive tract and the outer body wall, providing space for the development and organization of internal organs. This structural feature is significant as it allows for greater complexity in organ systems compared to those without a coelom, such as acoelomates and pseudocoelomates.Coelomates are primarily divided into three major groups: annelids, mollusks, and arthropods. Each of these groups showcases distinct evolutionary adaptations that have allowed them to thrive in various environments. For instance, annelids, or segmented worms, possess a body structure that enables efficient movement and specialization of segments, which can lead to enhanced locomotion and feeding strategies. On the other hand, mollusks, which include snails, clams, and octopuses, display a remarkable diversity in form and function, with many species exhibiting advanced nervous systems and complex behaviors.Arthropods, the most numerous group of animals, also fall under the category of coelomate organisms. They possess an exoskeleton, jointed appendages, and a segmented body plan, which contribute to their adaptability in various habitats. The presence of a coelom in arthropods not only provides a protective environment for their internal organs but also facilitates more efficient movement and growth, allowing them to occupy ecological niches ranging from terrestrial to aquatic environments.The evolutionary significance of coelomate organisms cannot be overstated. The development of a coelom has been a key factor in the evolution of more complex life forms. It allows for the separation of bodily systems, which can lead to specialized functions and increased efficiency. For example, the circulatory system in coelomates can transport nutrients and waste products more effectively due to the presence of a dedicated body cavity. Additionally, the coelom acts as a hydrostatic skeleton in some organisms, providing support and facilitating movement.In contrast, organisms that lack a coelom often face limitations in their physiological capabilities. Acoelomates, such as flatworms, have a solid body structure that restricts the development of complex organ systems. Pseudocoelomates, like nematodes, possess a body cavity that is not entirely lined by mesoderm, leading to different functional constraints. Thus, the presence of a true coelom is a defining characteristic that sets coelomate organisms apart from their less complex relatives.In conclusion, understanding the concept of coelomate organisms is essential for appreciating the diversity and complexity of life on Earth. These animals represent a significant evolutionary step that has allowed for the emergence of highly specialized and adaptive forms. As we continue to explore the intricacies of the animal kingdom, the role of the coelom in shaping the biology and evolution of these organisms will remain a focal point of study. Through this lens, we can better comprehend how structural features influence function and adaptation in the natural world.

动物王国是一个广阔而多样的领域，包含了各种不同的生物，它们表现出不同的结构和功能特征。在这些生物中，一个重要的分类是coelomate，指的是拥有真正体腔的动物。体腔是位于消化道和外部身体壁之间的充满液体的体腔，为内部器官的发展和组织提供了空间。这一结构特征具有重要意义，因为与没有体腔的动物（如无体腔动物和假体腔动物）相比，它允许器官系统的更大复杂性。体腔动物主要分为三大类：环节动物、软体动物和节肢动物。这些组别中的每一个都展示了独特的进化适应，使它们能够在各种环境中繁衍生息。例如，环节动物或分段蠕虫，具有使有效运动和分段专门化的身体结构，这可以导致增强的运动能力和觅食策略。另一方面，软体动物，包括蜗牛、蛤蜊和章鱼，展示了形式和功能的显著多样性，许多物种表现出先进的神经系统和复杂的行为。节肢动物是动物中数量最多的一组，也属于coelomate生物。它们拥有外骨骼、关节附肢和分段身体计划，这些特征有助于它们在各种栖息地中的适应。体腔的存在不仅为节肢动物的内部器官提供了保护环境，还促进了更有效的运动和生长，使它们能够占据从陆地到水域的生态位。coelomate生物的进化意义不容小觑。体腔的发展是更复杂生命形式进化的关键因素。它允许身体系统的分离，这可以导致专门功能和效率的提高。例如，体腔动物的循环系统可以更有效地运输营养物质和废物，因为它拥有专门的体腔。此外，在某些生物中，体腔作为水压骨骼提供支持并促进运动。相比之下，缺乏体腔的生物往往面临生理能力上的限制。无体腔动物，如扁虫，具有坚固的身体结构，限制了复杂器官系统的发展。假体腔动物，如线虫，拥有一个并非完全由中胚层衬里的体腔，导致不同的功能限制。因此，真正体腔的存在是将coelomate生物与其较简单的亲属区分开的决定性特征。总之，理解coelomate生物的概念对于欣赏地球上生命的多样性和复杂性至关重要。这些动物代表了一个重要的进化步骤，使高度专门化和适应性形式的出现成为可能。随着我们继续探索动物王国的复杂性，体腔在塑造这些生物的生物学和进化中的作用将始终是研究的焦点。通过这种视角，我们可以更好地理解结构特征如何影响自然界中的功能和适应。