dicotyledon

简明释义

英[ˌdaɪkɒtɪˈliːdən]美[ˌdaɪkɑːtɪˈliːdən]

n. [植] 双子叶植物

英英释义

单词用法

同义词

反义词

例句

1.The results showed that Rhododendronous physiological and morphological responses to alkali and Iron deficit were similar to dicotyledon and monocotyledon of non - graminaceae.

杜鹃在碱性缺铁情况下，生理及形态反应都符合双子叶植物和非禾本科单子叶植物的反应机制。

2.The results showed that Rhododendronous physiological and morphological responses to alkali and Iron deficit were similar to dicotyledon and monocotyledon of non - graminaceae.

杜鹃在碱性缺铁情况下，生理及形态反应都符合双子叶植物和非禾本科单子叶植物的反应机制。

3.The Gramineae and Cyperaceae were Locustae's main host. The Dicotyledon could be temporary host, however , it was bad for Locustae to grow up, breed and so on.

飞蝗嗜食寄主为禾本科、莎草科植物，双子叶植物可以成为飞蝗的临时寄主，但对飞蝗的发育、繁殖及后代均有明显的不利影响；

4.The total effective rate against corn field grass family, dicotyledon, cyperaceae weeds can be higher than 86, and it is safe to corn and soybean crops.

本发明悬乳剂提高了防效，扩大了乙草胺和阿灭净的防治谱，对玉米田禾本科，双子叶，莎草科杂草的总防效达86%以上，而且对玉米，大豆等作物使用安全性好。

5.In addition, the same P1943-GUS fusion construct was introduced into tobacco to analyze its specificity in dicotyledon.

另外还将P 1943 -GUS转进烟草中，研究其在双子叶植物中的特异性。

6.The microcapsule can be widely used for preventing and controlling monocotyledonous weeds in dicotyledon crop field.

本发明所提供的微胶囊剂，可广泛用于双子叶作物田中防除单子叶杂草。

7.In angiosperms there are 475 species of monocotyledon and 567 species of dicotyledon.

被子植物中单子叶植物475种，双子叶植物567种。

8.The herbicidal activity on dicotyledon weeds is better than on monocotyledon weeds.

对双子叶杂草的活性明显优于对单子叶杂草的活性。

9.The sunflower is a classic example of a dicotyledon 双子叶植物.

向日葵是一个典型的dicotyledon 双子叶植物的例子。

10.In botany classes, students learn to identify dicotyledons 双子叶植物 by their leaf structure.

在植物学课上，学生们通过叶子的结构来识别dicotyledons 双子叶植物。

11.Many fruits, such as apples and cherries, come from dicotyledon 双子叶植物 species.

许多水果，如苹果和樱桃，来自dicotyledon 双子叶植物物种。

12.The dicotyledon 双子叶植物 family includes important crops like beans and peas.

dicotyledon 双子叶植物家族包括豆类和豌豆等重要作物。

13.Understanding the differences between dicotyledons 双子叶植物 and monocotyledons is essential for horticulturists.

理解dicotyledons 双子叶植物和单子叶植物之间的区别对园艺师至关重要。

作文

In the world of botany, understanding the classification of plants is crucial for both scientists and enthusiasts alike. One of the primary classifications in the plant kingdom is the division between monocotyledons and dicotyledons. The term dicotyledon refers to a group of flowering plants that have two embryonic leaves, or cotyledons, in their seeds. This characteristic is one of the defining features that distinguish dicotyledons from their monocot counterparts, which only possess one cotyledon. The significance of dicotyledons extends beyond mere classification; it plays a vital role in agriculture, horticulture, and ecology. Many of the plants that we rely on for food, such as beans, peas, and tomatoes, belong to this category. The presence of two cotyledons allows dicotyledon seeds to store more nutrients, which can be advantageous for the early growth of the plant. This nutrient-rich environment supports the seedling during its initial stages of development, enabling it to establish roots and begin photosynthesis more effectively. Furthermore, dicotyledons exhibit a wide range of morphological and anatomical diversity. Their leaves are typically broad and can be arranged in various patterns, including opposite, alternate, or whorled formations. This diversity is not only aesthetically pleasing but also functional, as different leaf shapes and arrangements can optimize light capture for photosynthesis, adapt to varying climatic conditions, and deter herbivory. The flowers of dicotyledons are another area where they show remarkable diversity. They often possess petals in multiples of four or five, and their floral structures are generally more complex than those of monocots. This complexity can facilitate a variety of pollination strategies, attracting different types of pollinators such as bees, butterflies, and birds. The relationship between dicotyledons and their pollinators is a fascinating aspect of ecology, illustrating the interconnectedness of life forms within an ecosystem. In addition to their agricultural importance, dicotyledons play a crucial role in environmental sustainability. Many species within this group are integral to maintaining soil health, preventing erosion, and supporting biodiversity. For instance, legumes, which are dicotyledons, have the unique ability to fix nitrogen in the soil, enriching it and benefiting other plants in the vicinity. This symbiotic relationship with bacteria in their root nodules exemplifies how dicotyledons contribute to ecosystem balance. However, despite their many benefits, dicotyledons face numerous threats from habitat destruction, climate change, and invasive species. Conservation efforts are essential to protect these plants and their habitats, ensuring that future generations can benefit from the ecological services they provide. Educating the public about the importance of dicotyledons and promoting sustainable practices in agriculture and land use are critical steps towards preserving these vital organisms. In conclusion, dicotyledons represent a significant group of plants that are essential to our ecosystems, agriculture, and daily lives. Their unique characteristics, such as having two cotyledons, diverse morphology, and complex reproductive structures, make them fascinating subjects of study. As we continue to explore the wonders of the plant kingdom, it is vital to recognize the importance of dicotyledons and strive to protect them for the future. Understanding the role of dicotyledons in our world not only enriches our knowledge of botany but also highlights the need for conservation and sustainable practices in our interactions with nature.

在植物学的世界中，理解植物的分类对科学家和爱好者来说都是至关重要的。植物王国的主要分类之一是单子叶植物和双子叶植物之间的划分。术语双子叶植物指的是一类开花植物，它们的种子中具有两个胚叶或子叶。这一特征是区分双子叶植物与其单子叶植物同类的决定性特征之一。 双子叶植物的重要性不仅仅体现在分类上；它在农业、园艺和生态学中也扮演着重要角色。我们依赖的许多食物植物，如豆类、豌豆和番茄，都属于这一类别。两个子叶的存在使得双子叶植物的种子能够储存更多的营养，这对植物的早期生长是有利的。这种富含营养的环境支持着幼苗在初始生长阶段，使其能够更有效地建立根系并开始光合作用。 此外，双子叶植物表现出广泛的形态和解剖多样性。它们的叶子通常较宽，可以以不同的模式排列，包括对生、互生或轮生。这种多样性不仅在美学上令人愉悦，而且在功能上也是如此，因为不同的叶子形状和排列可以优化光捕获，适应不同的气候条件，并抵御食草动物的侵害。 双子叶植物的花朵是它们展现出显著多样性的另一个领域。它们通常以四或五的倍数拥有花瓣，其花的结构通常比单子叶植物更复杂。这种复杂性可以促进多种授粉策略，吸引不同类型的授粉者，如蜜蜂、蝴蝶和鸟类。双子叶植物与其授粉者之间的关系是生态学的一个迷人方面，展示了生态系统内生命形式的相互联系。 除了农业的重要性外，双子叶植物在环境可持续性中也发挥着关键作用。该组中的许多物种对于维持土壤健康、预防侵蚀和支持生物多样性至关重要。例如，豆科植物（双子叶植物）具有独特的能力，可以固定土壤中的氮，从而丰富土壤并使周围的其他植物受益。这种与根瘤中细菌的共生关系展示了双子叶植物如何为生态系统的平衡作出贡献。 然而，尽管有许多好处，双子叶植物面临着栖息地破坏、气候变化和外来物种等诸多威胁。保护工作对于保护这些植物及其栖息地至关重要，以确保未来几代人能够从它们提供的生态服务中受益。教育公众了解双子叶植物的重要性，并促进农业和土地使用中的可持续实践，是保护这些重要生物的关键步骤。 总之，双子叶植物代表了一类对我们的生态系统、农业和日常生活至关重要的植物。它们的独特特征，如具有两个子叶、多样的形态和复杂的繁殖结构，使它们成为迷人的研究对象。当我们继续探索植物王国的奇迹时，认识到双子叶植物的重要性并努力保护它们以造福未来是至关重要的。理解双子叶植物在我们世界中的作用不仅丰富了我们对植物学的知识，还突显了在与自然互动时进行保护和可持续实践的必要性。