indusium

简明释义

英[ɪnˈduːziəm]美[ɪnˈduːziəm]

n. [解剖] 苞膜；[昆] 胚被；囊群盖

复 数 i n d u s i a

英英释义

单词用法

同义词

反义词

例句

1.The indusium is absent. The annulus is transverse and complete, and consists of about 18 thickened cells.

环带横列于孢子囊的上部，完全，单排细胞，细胞数目约为18个。

2.The indusium is absent.

不存在胚被。

3.The indusium is absent. The annulus is transverse and complete, and consists of about 18 thickened cells.

环带横列于孢子囊的上部，完全，单排细胞，细胞数目约为18个。

4.Botanists study the indusium to understand the reproductive strategies of ferns.

植物学家研究indusium以了解蕨类植物的繁殖策略。

5.The presence of an indusium can indicate the health of a fern species.

一个indusium的存在可以表明一种蕨类植物的健康状况。

6.In botany, the indusium is often referred to as a protective covering for spore cases.

在植物学中，indusium通常被称为孢子囊的保护层。

7.The indusium can vary in shape and size depending on the species of fern.

不同种类的蕨类植物，其indusium的形状和大小可能有所不同。

8.The fern's indusium protects the developing spores from environmental damage.

蕨类植物的indusium保护发育中的孢子免受环境损害。

作文

The world of botany is filled with intricate structures and fascinating terms that describe the various parts of plants. One such term is indusium, which refers to a specialized structure found in certain types of ferns. The indusium is a thin, protective covering that shields the sporangia, the structures that produce spores, from environmental factors such as moisture and UV radiation. This adaptation is crucial for the survival of ferns, as it helps to ensure that their reproductive cells are adequately protected until they are ready to be dispersed.Ferns are unique among plants due to their reproductive strategy, which involves producing spores instead of seeds. The indusium plays a significant role in this process. It usually takes the form of a small, membranous flap that can either be attached to the leaf or free-floating above the sporangia. This protective layer not only guards the sporangia but also aids in the dispersal of spores when the time is right. When conditions become favorable, the indusium will often dry out and curl back, allowing the spores to be released into the environment.Understanding the function of the indusium enhances our appreciation of the complexity of plant life. For instance, the presence and shape of the indusium can vary greatly among different fern species, reflecting their adaptation to specific habitats. Some ferns may have a well-developed indusium, while others may have a rudimentary or even absent one, indicating their evolutionary history and ecological niche.The study of the indusium also provides insights into the broader field of plant biology. By examining how different plants protect their reproductive structures, scientists can draw parallels between various species and understand the evolutionary pressures that shape these adaptations. For example, the indusium serves a similar purpose to other protective structures found in the plant kingdom, such as the seed coat in flowering plants. Both structures offer protection against environmental threats, ensuring the continuation of the species.In addition to its biological significance, the indusium has practical implications in horticulture and conservation. Knowledge about how ferns reproduce and the role of the indusium can aid in the cultivation of these plants in gardens and natural reserves. By creating conditions that mimic their native habitats, gardeners can encourage healthy fern growth and reproduction, while conservationists can better protect endangered fern species by understanding their reproductive strategies.In conclusion, the term indusium encapsulates more than just a botanical definition; it represents a vital aspect of fern biology and ecology. Through its protective role, the indusium ensures the successful reproduction of ferns, highlighting the intricate relationships between plants and their environments. As we continue to explore the wonders of the plant kingdom, understanding terms like indusium enriches our knowledge and deepens our connection to the natural world.

植物学的世界充满了复杂的结构和迷人的术语，这些术语描述了植物的各个部分。其中一个术语是indusium，它指的是某些类型蕨类植物中发现的一种特殊结构。indusium是一种薄薄的保护覆盖物，保护孢子囊，即产生孢子的结构，免受环境因素的影响，如湿气和紫外线辐射。这种适应性对蕨类植物的生存至关重要，因为它有助于确保它们的生殖细胞在准备好散播之前得到充分保护。蕨类植物由于其繁殖策略的独特性而在植物中脱颖而出，它们通过产生孢子而不是种子来繁殖。indusium在这个过程中起着重要作用。它通常呈现为一种小的膜状瓣，可以附着在叶子上或自由漂浮在孢子囊上方。这个保护层不仅保护孢子囊，还在适当的时候帮助孢子的散播。当条件变得有利时，indusium通常会干燥并卷曲，从而允许孢子释放到环境中。理解indusium的功能增强了我们对植物生命复杂性的欣赏。例如，不同蕨类植物种类的indusium的存在和形状可能差异很大，反映了它们对特定栖息地的适应。有些蕨类植物可能具有发达的indusium，而其他植物可能只有初步的甚至缺失的indusium，这表明它们的进化历史和生态位。对indusium的研究还提供了植物生物学更广泛领域的见解。通过检查不同植物如何保护其生殖结构，科学家可以在各种物种之间绘制平行关系，并理解塑造这些适应性的进化压力。例如，indusium的作用与开花植物中的其他保护结构（如种皮）相似。这两种结构都提供了对环境威胁的保护，确保物种的延续。除了生物学意义外，indusium在园艺和保护方面也具有实际意义。了解蕨类植物如何繁殖以及indusium的作用可以帮助在花园和自然保护区中培养这些植物。通过创造模拟其原生栖息地的条件，园丁可以促进健康的蕨类植物生长和繁殖，而保护者则可以通过理解它们的繁殖策略，更好地保护濒危蕨类植物。总之，术语indusium不仅仅是一个植物学定义；它代表了蕨类植物生物学和生态学的重要方面。通过其保护作用，indusium确保了蕨类植物的成功繁殖，突显了植物与其环境之间的复杂关系。随着我们继续探索植物王国的奇迹，理解像indusium这样的术语丰富了我们的知识，加深了我们与自然世界的联系。