spirogyra

简明释义

英[ˌspaɪrəˈdʒaɪərə]美[ˌspaɪrəˈdʒaɪrə;ˌspaɪroʊˈdʒaɪ

n. 水绵；水棉属，绿藻门

英英释义

单词用法

同义词

反义词

例句

1.Spirogyra and Rhizopus are examples.

例如水绵属和根霉属的植物。

2.The damage of aquatic plant Spirogyra sp. and Pistia stratiotes L. from anion surfactant LAS and nonionic surfactant AE was studied with transmission electron microscopy.

利用透射电镜研究了阴离子型表面活性剂LAS和非离子型表面活性剂AE对水生植物水绵、水浮莲的损伤作用。

3.The damage of aquatic plant Spirogyra sp. and Pistia stratiotes L. from anion surfactant LAS and nonionic surfactant AE was studied with transmission electron microscopy.

利用透射电镜研究了阴离子型表面活性剂LAS和非离子型表面活性剂AE对水生植物水绵、水浮莲的损伤作用。

4.The pond was filled with green strands of spirogyra, a common freshwater alga.

这个池塘里充满了绿色的螺旋藻，这是一种常见的淡水藻类。

5.Aquatic plants like spirogyra play a crucial role in oxygen production.

像螺旋藻这样的水生植物在氧气生产中起着至关重要的作用。

6.The presence of spirogyra in the water indicates a healthy ecosystem.

水中存在螺旋藻表明生态系统健康。

7.During our biology class, we examined spirogyra under the microscope to study its unique spiral chloroplasts.

在我们的生物课上，我们在显微镜下观察了螺旋藻，以研究其独特的螺旋叶绿体。

8.Some species of spirogyra can reproduce through fragmentation, allowing rapid population growth.

一些螺旋藻的种类可以通过断裂繁殖，从而快速增长种群。

作文

In the world of freshwater algae, one organism stands out due to its unique structure and ecological importance: spirogyra. This filamentous green algae is commonly found in ponds and slow-moving streams, where it plays a crucial role in aquatic ecosystems. The name spirogyra comes from the Greek words 'spira' meaning spiral and 'gyra' meaning ring, which aptly describes its characteristic spiral arrangement of chloroplasts within its cells.The structure of spirogyra is fascinating. Each filament is composed of long chains of cylindrical cells, and within these cells, the spiral-shaped chloroplasts are responsible for photosynthesis. These chloroplasts not only give spirogyra its vibrant green color but also enable it to convert sunlight into energy, producing oxygen as a byproduct. This process is essential for maintaining the oxygen levels in aquatic environments, benefiting various organisms that rely on dissolved oxygen for survival.One of the most remarkable features of spirogyra is its ability to reproduce both sexually and asexually. Asexual reproduction occurs through fragmentation, where pieces of the filament break off and develop into new individuals. This method allows spirogyra to rapidly colonize suitable habitats. On the other hand, sexual reproduction involves the formation of gametes, which can lead to genetic variation and adaptability in changing environments. This dual reproductive strategy ensures the survival and proliferation of spirogyra across diverse conditions.Ecologically, spirogyra serves as an important food source for various aquatic organisms, including herbivorous fish and invertebrates. By providing nourishment at the base of the food web, spirogyra supports a wide range of life forms. Additionally, its presence in water bodies can indicate good water quality, as it thrives in clean, nutrient-rich environments. However, when nutrient levels become excessively high due to pollution, spirogyra can proliferate uncontrollably, leading to algal blooms that deplete oxygen levels and harm aquatic life.The study of spirogyra extends beyond its ecological significance; it also has applications in biotechnology and education. Researchers are exploring the potential of spirogyra in biofuel production due to its high lipid content, which can be converted into biodiesel. Furthermore, its simple structure makes it an ideal organism for teaching students about photosynthesis, cellular structure, and ecological interactions.In conclusion, spirogyra is more than just a common algae; it is a vital component of freshwater ecosystems. Its unique characteristics, ecological roles, and potential applications make it an interesting subject of study. Understanding spirogyra not only enhances our knowledge of aquatic biology but also highlights the importance of preserving our natural water bodies and their inhabitants. As we continue to explore the wonders of the natural world, organisms like spirogyra remind us of the intricate connections that sustain life on Earth.

螺旋藻在淡水藻类的世界中，由于其独特的结构和生态重要性而脱颖而出。这种丝状绿色藻类通常生长在池塘和缓流的溪流中，在水生生态系统中发挥着至关重要的作用。螺旋藻这个名字来源于希腊语中的“spira”，意为螺旋，而“gyra”意为环，这恰好描述了其细胞内叶绿体的螺旋排列。螺旋藻的结构令人着迷。每个丝状体由长链的圆柱形细胞组成，而在这些细胞内，螺旋形的叶绿体负责光合作用。这些叶绿体不仅赋予螺旋藻鲜艳的绿色，还使其能够将阳光转化为能量，产生氧气作为副产品。这一过程对于维持水生环境中的氧气水平至关重要，造福于依赖溶解氧生存的各种生物。螺旋藻最显著的特点之一是其能够进行无性和有性繁殖。无性繁殖通过碎片化发生，丝状体的部分断裂并发育成新的个体。这种方法使得螺旋藻能够迅速占领适宜的栖息地。另一方面，有性繁殖涉及配子的形成，这可以导致基因变异和在变化环境中的适应能力。这种双重繁殖策略确保了螺旋藻在多样条件下的生存和繁衍。在生态上，螺旋藻作为各种水生生物的重要食物来源，包括食草鱼和无脊椎动物。通过在食物链底部提供养分，螺旋藻支持着广泛的生命形式。此外，它在水体中的存在可以指示良好的水质，因为它在清洁、富营养的环境中茁壮成长。然而，当营养水平由于污染而过高时，螺旋藻可能会失控繁殖，导致藻类暴发，耗尽氧气并危害水生生命。对螺旋藻的研究不仅超越了其生态重要性；它在生物技术和教育方面也有应用。研究人员正在探索利用螺旋藻生产生物燃料的潜力，因为其高脂肪含量可以转化为生物柴油。此外，其简单的结构使其成为教授学生光合作用、细胞结构和生态相互作用的理想生物。总之，螺旋藻不仅仅是一种常见的藻类；它是淡水生态系统的重要组成部分。其独特的特征、生态角色和潜在应用使其成为一个有趣的研究对象。理解螺旋藻不仅增强了我们对水生生物学的知识，还强调了保护我们自然水体及其生物的重要性。当我们继续探索自然界的奇迹时，像螺旋藻这样的生物提醒我们维持地球生命的复杂联系。