sepal

简明释义

英[ˈsepl]美[ˈsi:pl]

n. [植] 萼片；花萼

英英释义

单词用法

同义词

反义词

例句

1.Any of numerous orchids of the genus pterostylis having leaves in a basal rosette and green flowers often striped purple or brown or red with the dorsal sepal incurved to form a hood.

pterostylis属的任何一种兰花，基生莲座叶丛，花绿色、常有紫色、褐色或红色条纹，萼片背部向内弯曲成盔状。

2.The sepal is usually green. It can protect the flower bud.

花萼通常是绿色的，它能保护花芽。

3.A sepal, petal, and a thorn.

一个萼片，一叶花瓣，和一根荆棘。

4.The sepal is usually green. It can protect the flower bud.

花萼通常是绿色的，它能保护花芽。

5.The hood-shaped sepal or corolla of some flowers.

无距萼片披针形；上部萼片狭卵形或长圆形。

6.Any of numerous orchids of the genus pterostylis having leaves in a basal rosette and green flowers often striped purple or brown or red with the dorsal sepal incurved to form a hood.

pterostylis属的任何一种兰花，基生莲座叶丛，花绿色、常有紫色、褐色或红色条纹，萼片背部向内弯曲成盔状。

7.The sepal structure can vary greatly among different species of plants.

不同植物物种之间的萼片结构差异很大。

8.When examining the flower, I noticed the sepal was slightly curled.

在检查花朵时，我注意到萼片稍微卷曲。

9.The purpose of the sepal is to support the petals when they bloom.

在花瓣绽放时，萼片的作用是支撑花瓣。

10.The sepal of the flower protects the developing bud.

花的萼片保护着正在发育的花蕾。

11.In botany class, we learned that the sepal is often green and leaf-like.

在植物学课上，我们了解到萼片通常是绿色且类似叶子。

作文

In the world of botany, understanding the various parts of a flower is crucial for both amateur gardeners and professional botanists alike. One such part that often goes unnoticed is the sepal, which plays a vital role in the life cycle of flowering plants. The sepal (萼片) is typically the outermost part of a flower, forming a protective layer around the developing bud before it blooms. Its primary function is to shield the delicate petals and reproductive structures from environmental factors such as harsh weather, pests, and diseases.The sepal (萼片) is usually green, resembling leaves, and can vary greatly in size, shape, and color depending on the species of plant. In some flowers, the sepal (萼片) may be small and inconspicuous, while in others, it can be large and brightly colored, almost resembling petals. This variation serves not only a protective function but can also play a role in attracting pollinators. For instance, in certain orchids, the sepal (萼片) can be vividly colored to lure insects, thus facilitating pollination.The anatomy of the sepal (萼片) is quite fascinating. Each flower typically has multiple sepals (萼片), which are collectively known as the calyx. The arrangement and number of sepals (萼片) can help in identifying different species. For example, roses have five distinct sepals (萼片), while lilies may have three. This diversity is not just for aesthetic appeal; it reflects the evolutionary adaptations of plants to their environments.Moreover, the sepal (萼片) contributes to the overall health of the flower. During the flowering process, the sepal (萼片) helps maintain moisture levels within the bud, ensuring that the flower develops properly. Once the flower blooms, the sepal (萼片) may remain attached or fall away, depending on the species. In some cases, they may even continue to provide support for the flower as it matures.In horticulture, understanding the role of the sepal (萼片) can assist gardeners in selecting the right plants for their gardens. Those who appreciate the beauty of flowers should pay attention to the sepals (萼片) as well, as they contribute to the overall structure and function of the flower. By studying the sepal (萼片) and its characteristics, we gain insight into the complex interactions between plants and their environments.In conclusion, the sepal (萼片) is an essential component of flowering plants, providing protection, support, and sometimes even play a role in reproduction. Whether you are a casual observer of nature or a dedicated botanist, recognizing the significance of the sepal (萼片) enhances our appreciation of the intricate beauty of flowers. As we continue to explore the botanical world, let us not overlook the humble sepal (萼片) and the critical functions it serves in the life of a plant.

在植物学的世界中，理解花朵的各个部分对于业余园丁和专业植物学家来说都是至关重要的。其中一个常常被忽视的部分是萼片，它在开花植物的生命周期中扮演着重要角色。萼片通常是花的最外层，形成一个保护层，包围着正在发育的花蕾，在它绽放之前。它的主要功能是保护脆弱的花瓣和生殖结构，免受恶劣天气、害虫和疾病等环境因素的侵害。萼片通常是绿色的，类似于叶子，并且根据植物的种类，其大小、形状和颜色会有很大的变化。在某些花朵中，萼片可能小而不显眼，而在其他花朵中，它可能大而色彩鲜艳，几乎与花瓣相似。这种变化不仅具有保护功能，还可以在吸引授粉者方面发挥作用。例如，在某些兰花中，萼片可以呈现鲜艳的颜色，以吸引昆虫，从而促进授粉。萼片的解剖结构非常迷人。每朵花通常有多个萼片，它们统称为花萼。萼片的排列和数量有助于识别不同的物种。例如，玫瑰有五个明显的萼片，而百合可能有三个。这种多样性不仅仅是为了美观，它反映了植物对其环境的进化适应。此外，萼片还对花的整体健康做出贡献。在开花过程中，萼片帮助维持花蕾内的湿度水平，确保花朵正常发育。一旦花朵绽放，萼片可能保持附着或脱落，具体取决于物种。在某些情况下，它们甚至可能继续为花提供支持，直到花成熟。在园艺中，理解萼片的作用可以帮助园丁选择适合自己花园的植物。那些欣赏花朵美丽的人也应该关注萼片，因为它们对花的整体结构和功能有贡献。通过研究萼片及其特征，我们可以深入了解植物与环境之间复杂的相互作用。总之，萼片是开花植物的重要组成部分，提供保护、支持，有时甚至在繁殖中发挥作用。无论你是自然的随意观察者还是专注的植物学家，认识到萼片的重要性都能增强我们对花卉精致美丽的欣赏。当我们继续探索植物世界时，让我们不要忽视谦逊的萼片及其在植物生活中所发挥的关键作用。