monocotyledon

简明释义

英[ˌmɒnəʊˌkɒtɪˈliːdn]美[ˌmɑːnoʊˌkɑːtɪˈliːdn]

n. [植] 单子叶植物

英英释义

单词用法

同义词

反义词

例句

1.The orchid belongs to the monocotyledon, formed with 3 sepals, 3 flower petals, 6 anthers (dividing into 2 circles) and 3 gynoecia. it is one of the ancient famous flowers in our country.

兰花属于单子叶植物，花是由3个萼片，3个花辨，分为两个圈的6个花药和3个雌蕊组成的。

2.Compared with other monocotyledon, the rice's genome is smaller, so it has been considered as the model plant to study monocotyledon.

由于水稻的基因组相对于其它单子叶植物来说比较小，所以已经成为研究单子叶植物的模式生物。

3.Nevertheless, molecular biological technology requires the high-efficiency regeneration of plant tissues and cells which is comparatively difficult for the monocotyledon.

但是现代分子生物学实验技术对于植物的离体再生能力要求很高，这一点对于单子叶植物来说相对比较困难。

4.OBJECTIVE to investigate the function of the monocotyledon Coniothyriunsp polysaccharide to induce apoptosis of human Leucocythmia K562 cell lines in vitro.

目的：研究单子叶植物内生菌多糖对人红白血病K562细胞株的影响。

5.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。

6.Stablished the foundation for cultivation of new disease-resistant gladiolus variety, Offered the theoretical foundation for genetic transformation of the monocotyledon.

为培育唐菖蒲抗真菌病新品种奠定了基础，为单子叶花卉植物遗传转化提供了理论依据。

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 lily is an example of a flowering monocotyledon 单子叶植物 that is often found in gardens.

百合是一个常见于花园的开花monocotyledon 单子叶植物的例子。

9.In botany, the distinction between monocotyledons 单子叶植物 and dicotyledons is fundamental.

在植物学中，monocotyledons 单子叶植物 和双子叶植物之间的区别是基础性的。

10.Orchids are a diverse group of monocotyledons 单子叶植物 known for their unique flowers.

兰花是一类多样的monocotyledons 单子叶植物，以其独特的花朵而闻名。

11.Many crops, such as corn and wheat, are classified as monocotyledons 单子叶植物 due to their single cotyledon.

许多农作物，如玉米和小麦，被归类为monocotyledons 单子叶植物，因为它们有一片种子叶。

12.The grass in our backyard is a type of monocotyledon 单子叶植物, which means it has one seed leaf.

我们后院的草是一种monocotyledon 单子叶植物，这意味着它有一片种子叶。

作文

In the world of botany, understanding the classification of plants is crucial for both scientists and enthusiasts alike. One significant category in this classification system is the group known as monocotyledon, which refers to flowering plants that typically have one seed leaf, or cotyledon, upon germination. This characteristic distinguishes them from their counterparts, the dicotyledons, which possess two seed leaves. The study of monocotyledon plants offers insights into their unique structures, growth patterns, and ecological roles.The term monocotyledon comes from the Greek words 'mono,' meaning single, and 'cotyledon,' referring to the first leaf or leaves that appear from a seed. Plants belonging to this category include a wide variety of species, such as grasses, lilies, orchids, and palms. One of the most recognizable features of monocotyledon plants is their leaf structure. Typically, the leaves are long and narrow with parallel veins, which is a stark contrast to the branching vein pattern found in many dicots.Another important aspect of monocotyledon plants is their root system. Most of these plants develop a fibrous root system, which consists of many thin roots that spread out from the base of the stem. This type of root system is particularly effective for anchoring the plant in soil and absorbing water and nutrients efficiently. In contrast, dicots usually develop a taproot system, where a single, thick root grows deep into the ground.Reproductive structures in monocotyledon plants also exhibit distinct characteristics. For instance, the flowers of monocots often have floral parts in multiples of three, such as three petals or six stamens. This contrasts with dicots, which typically have floral parts in multiples of four or five. These differences in floral structure can be observed in many species, making it easier for botanists to identify and classify them.The ecological significance of monocotyledon plants cannot be overstated. Many of the world's staple food crops, such as rice, wheat, and corn, belong to this group. These plants play an essential role in global food security and agriculture. Furthermore, monocots like grasses form the backbone of many ecosystems, providing habitat and food for countless animal species.In addition to their agricultural importance, monocotyledon plants contribute to biodiversity and ecosystem stability. They often thrive in various environments, from wetlands to deserts, demonstrating their adaptability and resilience. By studying these plants, researchers can gain valuable insights into environmental health and the impacts of climate change.In conclusion, the classification of plants into groups such as monocotyledon and dicotyledon is fundamental to our understanding of botany and ecology. The unique characteristics of monocotyledon plants, including their leaf structure, root systems, and reproductive features, highlight their diversity and importance in nature. As we continue to explore the world of plants, recognizing the significance of monocotyledon species will help us appreciate the intricate relationships within ecosystems and the vital role these plants play in sustaining life on Earth.

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至关重要。在这个分类系统中，一个重要的类别是被称为单子叶植物的组别，它指的是那些在发芽时通常只有一片子叶（或称子叶）的开花植物。这一特征使它们与其对应的双子叶植物区分开来，后者具有两片子叶。对单子叶植物的研究提供了对其独特结构、生长模式和生态角色的深入了解。单子叶植物这个术语来自希腊语“mono”，意为单一，以及“cotyledon”，指的是从种子中出现的第一片叶子或叶子。属于这一类别的植物包括多种物种，如草类、百合、兰花和棕榈树。单子叶植物的一大显著特征是其叶子的结构。通常，叶子细长且狭窄，具有平行的脉络，这与许多双子叶植物中发现的分支脉络模式形成鲜明对比。单子叶植物的根系也是一个重要方面。这些植物大多数发展出一种纤维状根系，由许多细根从茎基部向外延伸。这种类型的根系特别有效于将植物固定在土壤中，并高效地吸收水分和养分。相比之下，双子叶植物通常发展出主根系，其中一根粗壮的根深深扎入地下。单子叶植物的繁殖结构也表现出明显的特征。例如，单子叶植物的花朵通常以三的倍数出现花瓣和雄蕊，如三片花瓣或六个雄蕊。这与双子叶植物通常以四或五的倍数出现的花朵部分形成对比。这些花结构的差异可以在许多物种中观察到，使植物学家更容易识别和分类它们。单子叶植物在生态上的重要性不容小觑。世界上许多主要粮食作物，如稻米、小麦和玉米，都属于这一组。这些植物在全球粮食安全和农业中扮演着至关重要的角色。此外，像草类这样的单子叶植物构成了许多生态系统的骨干，为无数动物物种提供栖息地和食物。除了农业的重要性，单子叶植物还对生物多样性和生态系统的稳定性做出了贡献。它们通常能在各种环境中茁壮成长，从湿地到沙漠，展现了它们的适应性和韧性。通过研究这些植物，研究人员可以获得有关环境健康和气候变化影响的宝贵见解。总之，将植物分类为单子叶植物和双子叶植物等组别是我们理解植物学和生态学的基础。单子叶植物的独特特征，包括其叶子结构、根系和繁殖特征，突显了它们在自然界中的多样性和重要性。随着我们继续探索植物世界，认识到单子叶植物物种的重要性将帮助我们欣赏生态系统内的复杂关系以及这些植物在维持地球生命中的重要作用。