univalve

简明释义

英[ˈjuːnɪvælv]美[ˈjʊnəˌvælv]

adj. 单壳的；单瓣的

n. 单壳软体动物

英英释义

单词用法

同义词

反义词

例句

1.I lifted it and found the repulsive, tacky foot of the univalve protruding, still covered with sand.

我举起了它而且发现单壳软体动物凸出的逐退又发黏脚，仍然以沙子涵盖。

2.I lifted it and found the repulsive, tacky foot of the univalve protruding, still covered with sand.

我举起了它而且发现单壳软体动物凸出的逐退又发黏脚，仍然以沙子涵盖。

3.Large order of gastropods comprising univalve mollusks that have a single gill resembling a comb.

腹足类的一个很大的目，包含单壳软体动物，有一个梳状鳃。

4.The conch is a beautiful univalve that is often used in decorative arts.

海螺是一种美丽的单壳动物，常用于装饰艺术。

5.The term univalve refers specifically to mollusks with a single shell, unlike bivalves which have two.

单壳这个术语专指具有单一外壳的软体动物，不同于有两个壳的双壳类。

6.In marine biology, univalves are often studied for their unique adaptations to aquatic life.

在海洋生物学中，单壳动物常常因其对水生生活的独特适应而受到研究。

7.Many univalve species are found in freshwater environments, such as ponds and lakes.

许多单壳物种在淡水环境中被发现，如池塘和湖泊。

8.The snail is a common example of a univalve animal, which means it has a single shell.

蜗牛是一个常见的单壳动物例子，这意味着它只有一个壳。

作文

In the world of marine biology, the term univalve refers to a type of mollusk that has a single shell. This classification is significant as it distinguishes these creatures from bivalves, which have two shells. Common examples of univalve organisms include snails and whelks, each showcasing the diverse adaptations and lifestyles of these fascinating animals. Understanding the characteristics and ecological roles of univalve species can provide insights into marine ecosystems and their health. The anatomy of univalve mollusks is quite remarkable. Their single shell serves not only as protection against predators but also as a means of retaining moisture in their often-harsh environments. For instance, land snails, which are a type of univalve, have evolved to thrive in terrestrial habitats by developing thicker shells that prevent desiccation. This adaptation highlights the versatility of univalve species in responding to environmental challenges.Moreover, the feeding mechanisms of univalve mollusks are equally intriguing. Many possess a specialized structure called a radula, which is a ribbon-like organ covered with tiny teeth. This unique feature allows them to scrape food off surfaces, such as algae from rocks or detritus from the ocean floor. In this way, univalve species play a crucial role in their ecosystems, contributing to nutrient cycling and energy flow.Interestingly, the reproductive strategies of univalve mollusks vary widely among species. Some, like certain types of snails, are hermaphrodites, meaning they possess both male and female reproductive organs. This can enhance their chances of finding a mate in environments where individuals are sparsely distributed. Other univalve species may have distinct male and female individuals, engaging in complex courtship behaviors to attract partners. The conservation of univalve species is becoming increasingly important as human activities threaten their habitats. Pollution, habitat destruction, and climate change pose significant risks to these organisms. For example, ocean acidification affects the ability of some univalve species to build and maintain their shells, leading to population declines. Therefore, understanding and protecting univalve mollusks is vital for maintaining biodiversity and the overall health of marine ecosystems.In conclusion, the study of univalve mollusks offers valuable insights into the complexity of marine life. From their unique anatomical features to their ecological roles, these creatures exemplify the diversity of adaptations found in nature. As we continue to explore and learn about the marine environment, recognizing the importance of univalve species will be essential for fostering a sustainable future for our oceans. By raising awareness and implementing conservation measures, we can help ensure that these remarkable organisms continue to thrive in their natural habitats.

在海洋生物学中，术语univalve指的是一种具有单一外壳的软体动物。这种分类很重要，因为它将这些生物与双壳类动物区分开来，后者有两个外壳。常见的univalve生物包括蜗牛和海螺，它们展示了这些迷人生物的多样适应性和生活方式。理解univalve物种的特征和生态角色可以提供对海洋生态系统及其健康的洞察。univalve软体动物的解剖结构非常引人注目。它们的单一外壳不仅作为保护掠食者的屏障，还作为保持水分的手段，以应对其往往恶劣的环境。例如，陆地蜗牛作为一种univalve，已经进化出更厚的外壳，以防止干燥。这种适应性突显了univalve物种在应对环境挑战方面的多样性。此外，univalve软体动物的取食机制同样引人入胜。许多物种拥有一种叫做齿舌的特殊结构，这是一种覆盖着细小牙齿的带状器官。这个独特的特征使它们能够从表面刮取食物，例如从岩石上刮取藻类或从海底刮取腐殖质。通过这种方式，univalve物种在其生态系统中扮演着至关重要的角色，促进了养分循环和能量流动。有趣的是，univalve软体动物的繁殖策略在物种之间差异很大。有些，如某些类型的蜗牛，是雌雄同体的，意味着它们同时具有雄性和雌性的生殖器官。这可以增强它们在个体稀疏分布的环境中找到配偶的机会。其他univalve物种可能有明确的雄性和雌性个体，进行复杂的求偶行为以吸引伴侣。随着人类活动威胁到它们的栖息地，保护univalve物种变得越来越重要。污染、栖息地破坏和气候变化对这些生物构成了重大风险。例如，海洋酸化影响某些univalve物种构建和维持其外壳的能力，导致种群下降。因此，理解和保护univalve软体动物对于维护生物多样性和海洋生态系统的整体健康至关重要。总之，研究univalve软体动物为我们提供了对海洋生命复杂性的宝贵洞察。从它们独特的解剖特征到它们的生态角色，这些生物体现了自然界中适应性的多样性。随着我们继续探索和学习海洋环境，认识到univalve物种的重要性对于促进我们海洋的可持续未来将是必不可少的。通过提高意识和实施保护措施，我们可以帮助确保这些非凡生物在其自然栖息地中继续繁荣。