hemitropous

简明释义

英[ˌhɛmɪˈtrəʊpəs]美[ˌhɛmɪˈtroʊpəs]

adj. 横生的

英英释义

单词用法

同义词

反义词

例句

1.The ovary contains 20-23 ovules. The ovules are hemitropous, with 2 integuments, tenuinucellate and the archesporial cell functions directly as the mega-spore mother cell.

子房具胚珠20—23枚，胚珠横生，珠被二层，薄珠心，孢原细胞直接起大孢子母细胞作用。

2.The ovules are hemitropous, with 2 integuments, tenuinucellate and the archesporial cell functions directly as the mega-spore mother cell.

胚珠是半球形的，有2个被膜，腱鞘状，而原孢子细胞直接作为大孢子母细胞起作用。

3.The ovary contains 20-23 ovules. The ovules are hemitropous, with 2 integuments, tenuinucellate and the archesporial cell functions directly as the mega-spore mother cell.

子房具胚珠20—23枚，胚珠横生，珠被二层，薄珠心，孢原细胞直接起大孢子母细胞作用。

4.Understanding the hemitropous behavior of certain species can aid in agricultural practices.

理解某些物种的半向性行为可以帮助农业实践。

5.In botany, a hemitropous structure can help maximize photosynthesis by optimizing light exposure.

在植物学中，半向性结构可以通过优化光照来最大化光合作用。

6.The hemitropous adaptation seen in some flowers helps them attract pollinators more efficiently.

某些花朵中观察到的半向性适应有助于它们更有效地吸引授粉者。

7.The plant exhibits a hemitropous growth pattern, where it bends towards the light source.

这种植物表现出半向性的生长模式，向光源弯曲。

8.The hemitropous nature of the vine allows it to effectively climb towards the sun.

这种藤本植物的半向性特征使其能够有效地向阳光攀爬。

作文

In the realm of botany, the term hemitropous refers to a specific type of seed orientation in plants. This unique characteristic is crucial for understanding how seeds develop and ultimately germinate. When we delve into the concept of hemitropous seeds, we find that they exhibit a particular arrangement where the embryo is positioned at an angle relative to the seed coat. This orientation plays a significant role in the seed's ability to absorb nutrients and water effectively during the germination process.The fascinating aspect of hemitropous seeds is their evolutionary advantage. Plants have adapted various strategies to ensure the survival of their offspring, and the hemitropous arrangement is one such strategy. By positioning the embryo at an angle, these seeds can optimize their exposure to soil moisture and nutrients, which are vital for successful germination. This adaptation not only increases the likelihood of seedling establishment but also enhances the overall fitness of the plant species.Moreover, understanding the hemitropous nature of certain seeds allows botanists and horticulturists to make informed decisions about cultivation practices. For instance, when planting seeds with a hemitropous orientation, gardeners might consider the depth of planting and the surrounding soil conditions to ensure optimal growth. This knowledge can lead to more efficient agricultural practices and improved crop yields.In addition to its practical implications, the study of hemitropous seeds contributes to our broader understanding of plant biology and ecology. It highlights the intricate relationships between plants and their environments, showcasing how various traits have evolved in response to ecological pressures. The diversity of seed orientations, including hemitropous, reflects the complexity of evolutionary processes and the adaptability of life forms.Furthermore, the significance of hemitropous seeds extends beyond botany; it intersects with fields such as genetics and environmental science. Researchers are increasingly interested in how genetic variations influence seed morphology and orientation. Understanding these genetic factors can lead to advancements in plant breeding, enabling the development of new varieties that are better suited to changing climate conditions or specific agricultural needs.In conclusion, the term hemitropous encapsulates a critical aspect of seed biology that has far-reaching implications for both natural ecosystems and human agricultural practices. By studying the orientation and characteristics of hemitropous seeds, we gain insights into the remarkable adaptations that plants have developed over millions of years. This knowledge not only enriches our understanding of plant life but also empowers us to make informed decisions that can enhance food security and sustainable agriculture in the face of a rapidly changing world.

在植物学领域，术语hemitropous指的是植物种子的一种特定取向。这一独特特征对于理解种子的发育及最终萌发至关重要。当我们深入探讨hemitropous种子的概念时，我们发现它们表现出一种特定的排列方式，即胚胎相对于种皮呈角度定位。这种取向在种子萌发过程中对有效吸收养分和水分起着重要作用。hemitropous种子的迷人之处在于其进化优势。植物已适应各种策略以确保后代的生存，而hemitropous排列就是其中一种策略。通过将胚胎以角度定位，这些种子可以优化其对土壤水分和养分的暴露，这对于成功的萌发至关重要。这种适应不仅增加了幼苗建立的可能性，还增强了植物物种的整体适应性。此外，了解某些种子的hemitropous特性使植物学家和园艺师能够做出明智的栽培决策。例如，在种植具有hemitropous取向的种子时，园丁可能会考虑种植深度和周围土壤条件，以确保最佳生长。这一知识可以导致更高效的农业实践和改善的作物产量。除了其实际意义外，对hemitropous种子的研究还促进了我们对植物生物学和生态学的更广泛理解。它突显了植物与其环境之间错综复杂的关系，展示了各种特征如何在生态压力下进化。种子取向的多样性，包括hemitropous，反映了进化过程的复杂性和生命形式的适应性。此外，hemitropous种子的意义超越了植物学；它与遗传学和环境科学等领域交叉。研究人员越来越关注遗传变异如何影响种子的形态和取向。理解这些遗传因素可以推动植物育种的进步，使得开发出更适应气候变化或特定农业需求的新种类成为可能。总之，术语hemitropous概括了种子生物学的一个关键方面，其对自然生态系统和人类农业实践具有深远的影响。通过研究hemitropous种子的取向和特征，我们获得了植物在数百万年间发展出的显著适应能力的洞察。这一知识不仅丰富了我们对植物生命的理解，还使我们能够做出明智的决策，从而在快速变化的世界中增强粮食安全和可持续农业。