radula

简明释义

英[ˈrædjʊlə]美[ˈrædʒələ]

n. 齿舌

复 数 r a d u l a e 或 r a d u l a s

英英释义

单词用法

同义词

反义词

例句

1.A structure at the base of the mouth of most mollusks over which the radula is drawn back and forth in breaking up food.

舌突起，齿担一种生理构造，位于大多数软体动物的嘴底部，在这之上齿舌来回收缩以击碎食物。

2.A structure at the base of the mouth of most mollusks over which the radula is drawn back and forth in breaking up food.

舌突起，齿担一种生理构造，位于大多数软体动物的嘴底部，在这之上齿舌来回收缩以击碎食物。

3.The snail uses its radula (齿舌) to scrape algae off rocks.

蜗牛使用它的radula（齿舌）来刮去岩石上的藻类。

4.The feeding mechanism of a chiton involves its radula (齿舌), which helps it graze on tough surfaces.

海螺的进食机制涉及其radula（齿舌），帮助它在坚硬表面上啃食。

5.In studying mollusks, researchers often examine the structure of the radula (齿舌) for evolutionary insights.

在研究软体动物时，研究人员常常检查radula（齿舌）的结构以获取进化的见解。

6.The radula (齿舌) of some species can be quite complex, with rows of tiny teeth.

某些物种的radula（齿舌）可能相当复杂，带有多排微小的牙齿。

7.A well-preserved radula (齿舌) fossil can provide insights into ancient marine environments.

保存良好的radula（齿舌）化石可以提供对古代海洋环境的见解。

作文

The fascinating world of mollusks is filled with unique adaptations that allow these creatures to thrive in various environments. One of the most intriguing features found in many mollusks is the structure known as the radula. The radula is a specialized feeding organ that resembles a ribbon-like tongue covered with tiny, chitinous teeth. This remarkable adaptation serves several essential functions, making it a key element in the survival of these organisms.Mollusks are a diverse group, including snails, slugs, octopuses, and clams, each with its unique way of life. The radula plays a crucial role in how many of these animals feed. For instance, herbivorous snails use their radula to scrape algae off rocks or to gnaw on plant material. The teeth on the radula are designed to efficiently break down tough plant fibers, allowing the snail to extract nutrients effectively.In contrast, carnivorous mollusks, such as certain species of cone snails, utilize their radula in a more aggressive manner. These predators have evolved a highly specialized radula that can inject venom into their prey. The radula acts like a harpoon, delivering toxins that immobilize the victim, making it easier for the mollusk to consume it. This adaptation showcases the versatility of the radula as both a feeding tool and a weapon.The structure of the radula varies significantly among different mollusk species, reflecting their dietary preferences and ecological niches. For example, the radula of a grazing snail is broad and flat, ideal for scraping surfaces, while the radula of a predatory species might be elongated and sharp, suited for piercing and tearing flesh. This diversity highlights the evolutionary significance of the radula, as it allows mollusks to exploit various food sources and adapt to their environments.In addition to its role in feeding, the radula also plays a part in the overall ecology of marine and terrestrial ecosystems. By grazing on algae and plants, mollusks help control the growth of these organisms, contributing to the balance of their habitats. Furthermore, the radula facilitates nutrient cycling, as the waste produced by mollusks enriches the soil or sediment, promoting the growth of other organisms.Understanding the radula not only provides insights into the feeding habits of mollusks but also underscores the interconnectedness of life within ecosystems. As researchers continue to study these fascinating creatures, the radula remains a focal point of inquiry, revealing the intricate adaptations that have enabled mollusks to survive and flourish across the globe.In conclusion, the radula is more than just a feeding organ; it is a testament to the incredible diversity and adaptability of mollusks. From herbivores to carnivores, the variations in the radula reflect the unique ecological roles that these animals play. As we learn more about the radula and its functions, we gain a deeper appreciation for the complexity of life forms on our planet and the evolutionary processes that shape them.

软体动物的迷人世界充满了独特的适应性，使这些生物能够在各种环境中生存。其中一个最引人入胜的特征是许多软体动物体内的结构，称为radula。radula是一种特殊的进食器官，类似于一条覆盖着微小角质牙齿的带状舌头。这种卓越的适应性具有几个重要功能，使其成为这些生物生存的关键元素。软体动物是一个多样化的群体，包括蜗牛、蛞蝓、章鱼和蛤蜊等，每种都有其独特的生活方式。radula在许多这些动物的进食方式中发挥着至关重要的作用。例如，草食性蜗牛使用它们的radula来刮除岩石上的藻类或啃食植物材料。radula上的牙齿设计得非常有效，可以打破坚韧的植物纤维，使蜗牛能够有效地提取养分。相反，某些种类的锥形蜗牛等肉食性软体动物以更具攻击性的方式利用它们的radula。这些捕食者已经进化出一种高度专门化的radula，可以将毒液注入猎物。radula像一根鱼叉，释放毒素使猎物失去行动能力，从而使软体动物更容易吞食。这种适应性展示了radula作为进食工具和武器的多功能性。不同软体动物物种的radula结构差异显著，反映了它们的饮食偏好和生态位。例如，食草蜗牛的radula宽而平，适合刮擦表面，而捕食性物种的radula可能细长且锋利，适合刺穿和撕裂肉体。这种多样性突显了radula的进化重要性，因为它使软体动物能够利用各种食物来源并适应其环境。除了在进食中的作用外，radula还在海洋和陆地生态系统的整体生态中发挥作用。通过吃草藻类和植物，软体动物帮助控制这些生物的生长，促进栖息地的平衡。此外，radula有助于营养循环，因为软体动物产生的废物丰富了土壤或沉积物，促进其他生物的生长。理解radula不仅提供了对软体动物进食习惯的洞察，还强调了生态系统内生命之间的相互联系。随着研究人员继续研究这些迷人的生物，radula仍然是探究的重点，揭示了使软体动物能够生存和繁荣的复杂适应性。总之，radula不仅仅是一个进食器官；它是软体动物惊人多样性和适应性的证明。从草食动物到肉食动物，radula的变化反映了这些动物所扮演的独特生态角色。随着我们对radula及其功能了解的深入，我们对我们星球上生命形式的复杂性和塑造它们的进化过程有了更深刻的认识。