protostele

简明释义

英[ˈprəʊtəˌstiːl]美[ˈprotəˌstil;ˌprotəˈstili]

n. [植] 原生中柱

英英释义

单词用法

同义词

反义词

例句

1.Haplostele a type of protostele having a solid strand of stele with the xylem on the inside encircled by phloem pericycle and endodermis.

单中柱：原生中柱的一种类型，是由韧皮部、中柱鞘和内皮层包围着内方的木质部构成的实心中柱。

2.Haplostele a type of protostele having a solid strand of stele with the xylem on the inside encircled by phloem pericycle and endodermis.

单中柱：原生中柱的一种类型，是由韧皮部、中柱鞘和内皮层包围着内方的木质部构成的实心中柱。

3.In ferns, the presence of a protostele can be observed in their early developmental stages.

在蕨类植物中，可以在它们的早期发育阶段观察到原茎的存在。

4.The study focused on the evolutionary significance of protostele in vascular plants.

这项研究集中于原茎在维管植物中的进化意义。

5.Understanding the structure of protostele helps botanists classify different plant species.

理解原茎的结构有助于植物学家对不同植物物种进行分类。

6.Researchers discovered that some ancient plants had a primitive form of protostele.

研究人员发现一些古老的植物具有一种原始形式的原茎。

7.The plant's vascular system is classified as a type of protostele, which means it has a central core of xylem surrounded by phloem.

这种植物的维管系统被分类为一种原茎，这意味着它有一个中心木质部核心，周围环绕着韧皮部。

作文

In the study of plant anatomy, the term protostele refers to a specific type of vascular arrangement found in certain primitive plants. The protostele is characterized by a central core of vascular tissue surrounded by a layer of parenchyma cells. This structure is significant because it represents one of the earliest forms of stele organization in the evolutionary history of vascular plants. Understanding the protostele is crucial for botanists and paleobotanists as it provides insights into the development of more complex vascular systems in higher plants.The concept of protostele can be traced back to the evolution of land plants from their aquatic ancestors. As plants adapted to terrestrial life, they developed various structural modifications to facilitate water transport and support. The protostele, being one of the simplest forms of vascular arrangement, highlights the evolutionary transition from simpler to more complex structures. It is commonly found in certain groups of ferns and lycophytes, which are considered to be among the most primitive vascular plants.One of the fascinating aspects of the protostele is its role in the overall functionality of the plant. The central core of vascular tissue is primarily responsible for the conduction of water and nutrients, while the surrounding parenchyma cells play a supportive role. This efficient design allows for effective resource distribution, which is essential for the plant's survival in diverse environments.Furthermore, the study of protostele has implications beyond just understanding plant evolution. It also offers valuable information about ancient ecosystems. Fossils of plants exhibiting protostele structures provide clues about the climate and environmental conditions of the time they thrived. By analyzing these fossils, scientists can reconstruct past habitats and understand how plant life has adapted over millions of years.In addition to its historical significance, the protostele serves as a model for studying plant physiology. Researchers often examine the differences between protostele and more advanced stelar types, such as siphonostele and eustele, to understand how vascular arrangements influence plant growth and function. These studies contribute to our knowledge of plant biology and can have practical applications in agriculture and horticulture.In conclusion, the term protostele encapsulates a vital aspect of plant anatomy that is crucial for understanding the evolutionary history of vascular plants. Its simple yet effective structure reflects the adaptations necessary for life on land and serves as a foundation for more complex vascular systems. The exploration of protostele not only enriches our understanding of plant evolution but also enhances our ability to study ancient ecosystems and improve modern agricultural practices. Thus, the protostele remains an essential topic of research in botany, offering a window into the past and guiding us towards future discoveries.

在植物解剖学的研究中，术语protostele指的是某些原始植物中发现的一种特定的维管束排列。protostele的特点是有一个中央的维管组织核心，周围包裹着一层薄壁细胞。这种结构的重要性在于它代表了维管植物进化历史中最早的茎结构之一。理解protostele对于植物学家和古植物学家至关重要，因为它提供了关于更复杂的维管系统在高等植物中发展的见解。protostele的概念可以追溯到陆生植物从其水生祖先演化的过程。当植物适应陆地生活时，它们发展出了各种结构上的修改，以促进水分运输和支持。protostele作为最简单的维管排列形式之一，突显了从简单到复杂结构的进化过渡。它通常在某些蕨类植物和石松植物中发现，这些植物被认为是最原始的维管植物。protostele的一个迷人之处在于它在植物整体功能中的作用。中央的维管组织核心主要负责水分和养分的传导，而周围的薄壁细胞则起到支持的作用。这种高效的设计能够有效地分配资源，这对植物在多样环境中的生存至关重要。此外，protostele的研究不仅限于理解植物进化。它还提供了关于古代生态系统的宝贵信息。展示protostele结构的植物化石为它们繁荣时的气候和环境条件提供了线索。通过分析这些化石，科学家们可以重建过去的栖息地，并了解植物生命如何在数百万年中适应。除了其历史意义外，protostele还作为研究植物生理学的模型。研究人员经常考察protostele与更高级的茎类型，如管状茎和真茎之间的差异，以了解维管排列如何影响植物的生长和功能。这些研究为我们提供了植物生物学的知识，并可能在农业和园艺中具有实际应用。总之，术语protostele概括了植物解剖学中的一个重要方面，对于理解维管植物的进化历史至关重要。它简单而有效的结构反映了适应陆地生活所需的变化，并为更复杂的维管系统奠定了基础。对protostele的探索不仅丰富了我们对植物进化的理解，还增强了我们研究古代生态系统和改善现代农业实践的能力。因此，protostele仍然是植物学研究中的一个重要主题，为我们提供了通向过去和未来发现的窗口。