vorticella

简明释义

英[ˌvɔr.tɪˈsɛl.ə]美[ˌvɔr.tɪˈsɛl.ə]

n. 钟形虫；钟虫属

复 数 v o r t i c e l l a e 或 v o r t i c e l l a s

英英释义

单词用法

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例句

1.Any of various ciliate protozoans of the genus Vorticella, having a bell-shaped body and living underwater on a slender stalk often attached to a plant or other object.

钟虫一种钟虫属有纤毛的原生动物，具有铃状的身体，常连在一个植物或其它物体的细茎上并居住于水下。

2.Any of various ciliate protozoans of the genus Vorticella, having a bell-shaped body and living underwater on a slender stalk often attached to a plant or other object.

钟虫一种钟虫属有纤毛的原生动物，具有铃状的身体，常连在一个植物或其它物体的细茎上并居住于水下。

3.Researchers studied the behavior of vorticella 旋涡虫 to understand its feeding mechanisms.

研究人员研究了vorticella 旋涡虫的行为，以理解其摄食机制。

4.The vorticella 旋涡虫 uses its cilia to capture food particles from the water.

vorticella 旋涡虫利用纤毛捕捉水中的食物颗粒。

5.In biology class, we observed a live vorticella 旋涡虫 under the microscope.

在生物课上，我们在显微镜下观察了活的vorticella 旋涡虫。

6.The microscopic organism known as vorticella 旋涡虫 is often found in freshwater environments.

这种微观生物被称为vorticella 旋涡虫，通常在淡水环境中发现。

7.The contractile stalk of the vorticella 旋涡虫 allows it to attach to surfaces.

vorticella 旋涡虫的收缩茎使其能够附着在表面上。

作文

In the microscopic world of freshwater ecosystems, one fascinating organism that captures the attention of biologists is the vorticella. This single-celled creature belongs to the phylum Ciliophora and is known for its distinctive shape and unique lifestyle. The vorticella is often found attached to submerged surfaces, such as aquatic plants or rocks, using a stalk-like structure that allows it to remain anchored while feeding on bacteria and other small particles in the water. The morphology of the vorticella is quite remarkable. It has a bell-shaped body that is covered in tiny hair-like structures called cilia. These cilia not only help in locomotion but also play a crucial role in feeding. When the vorticella senses food in its environment, it uses its cilia to create water currents that draw in food particles towards its mouth. This efficient feeding mechanism is essential for its survival, as it relies on a steady supply of nutrients from its surroundings.One of the most interesting aspects of the vorticella is its ability to contract its stalk when threatened. This reaction allows the organism to quickly retract into its bell-shaped body, providing a defense against potential predators. After the threat has passed, the vorticella can extend its stalk once again, resuming its feeding activities. This adaptability highlights the evolutionary success of the vorticella in various aquatic environments.The life cycle of the vorticella is another area of interest for researchers. It reproduces asexually through a process called binary fission, where the organism divides into two identical daughter cells. This rapid reproduction rate enables vorticella populations to grow quickly under favorable conditions. Additionally, some species of vorticella can reproduce sexually, which adds genetic diversity to their populations and enhances their resilience in changing environments.Ecologically, the vorticella plays a significant role in freshwater ecosystems. By feeding on bacteria and organic debris, it helps maintain the balance of microbial communities. This is crucial for nutrient cycling in aquatic environments, as it contributes to the decomposition of organic matter and the regulation of bacterial populations. Moreover, the presence of vorticella in a habitat can indicate the overall health of the ecosystem, making it an important organism for ecological monitoring.In conclusion, the vorticella is a captivating organism that exemplifies the complexity of life at the microscopic level. Its unique feeding strategies, defensive adaptations, and ecological significance make it a subject of great interest to scientists and nature enthusiasts alike. Understanding the vorticella not only enriches our knowledge of biodiversity but also underscores the importance of preserving freshwater ecosystems for future generations.

在淡水生态系统的微观世界中，一种引人注目的生物体吸引了生物学家的注意，那就是涡虫。这种单细胞生物属于纤毛动物门，以其独特的形状和生活方式而闻名。涡虫通常附着在水下表面，如水生植物或岩石上，使用一种茎状结构使其固定在原地，同时以水中的细菌和其他小颗粒为食。涡虫的形态非常显著。它有一个钟形的身体，表面覆盖着微小的毛发状结构，叫做纤毛。这些纤毛不仅有助于运动，还在进食中发挥着重要作用。当涡虫感知到环境中的食物时，它会利用自己的纤毛产生水流，将食物颗粒吸引到嘴部。这种高效的进食机制对其生存至关重要，因为它依赖周围环境中的营养供应。涡虫最有趣的方面之一是它在受到威胁时收缩茎的能力。这一反应使生物能够迅速收缩到钟形体内，从而提供对潜在捕食者的防御。在威胁消失后，涡虫可以再次伸展其茎，恢复进食活动。这种适应性突显了涡虫在各种水生环境中的进化成功。涡虫的生命周期是研究人员关注的另一个领域。它通过一种称为二分裂的无性繁殖过程进行繁殖，其中生物体分裂成两个相同的子细胞。这种快速的繁殖率使得涡虫种群在有利条件下迅速增长。此外，一些涡虫物种还可以进行有性繁殖，这为它们的种群增加了遗传多样性，提高了在变化环境中的韧性。从生态学的角度来看，涡虫在淡水生态系统中扮演着重要角色。通过以细菌和有机碎屑为食，它有助于维持微生物群落的平衡。这对水生环境中的养分循环至关重要，因为它有助于有机物的分解和细菌种群的调节。此外，涡虫在栖息地中的存在可以指示生态系统的整体健康，使其成为生态监测的重要生物。总之，涡虫是一种迷人的生物，体现了微观层面生命的复杂性。其独特的进食策略、防御适应性和生态重要性使其成为科学家和自然爱好者的热门研究对象。理解涡虫不仅丰富了我们对生物多样性的认识，也强调了保护淡水生态系统对未来世代的重要性。