alternately pinnate

简明释义

互生羽状;

英英释义

例句

1.The alternately pinnate arrangement helps maximize sunlight absorption in the plant.

这种羽状交替的排列有助于植物最大化阳光吸收。

2.In botany, many species exhibit alternately pinnate leaf structures that adapt well to their environments.

在植物学中，许多物种表现出适应其环境的羽状交替叶结构。

3.When identifying trees, look for alternately pinnate leaves as a key characteristic.

在识别树木时，寻找作为关键特征的羽状交替叶子。

4.The alternately pinnate leaves of the fern create a delicate and intricate appearance.

蕨类植物的羽状交替叶子形成了一种精致而复杂的外观。

5.The leaves of the plant are alternately pinnate, meaning they are arranged in a staggered pattern along the stem.

这棵植物的叶子是羽状交替的，意味着它们沿着茎以错落的方式排列。

作文

The beauty of nature is often reflected in the intricate details of plants and their structures. One fascinating aspect of certain plants is their leaf arrangement, particularly when they are described as alternately pinnate. This term refers to a specific pattern of leaf arrangement where the leaflets are arranged on either side of a central stem or axis, but without any regular spacing. This means that instead of being arranged directly opposite each other, the leaflets are staggered along the stem, creating a visually appealing and complex structure. Understanding this concept can enhance our appreciation of botanical diversity and the unique adaptations of different species.The term alternately pinnate can be broken down into two parts: 'alternately' and 'pinnate'. 'Alternately' suggests a non-uniform arrangement, indicating that the leaflets do not mirror each other on opposite sides of the stem. Instead, they appear in an alternating fashion, which can create a more dynamic look. The word 'pinnate', derived from the Latin word 'pinna', meaning 'feather', refers to the leaf structure resembling a feather, where multiple leaflets emerge from a single central vein or petiole.This arrangement can be seen in various plant species, including some ferns and flowering plants. For example, the common black walnut tree (Juglans nigra) exhibits alternately pinnate leaves, with several leaflets extending from either side of the central stem. This type of leaf arrangement allows for greater light capture, as the leaflets can spread out more effectively than if they were arranged oppositely. Additionally, the staggered arrangement can help reduce shading among the leaflets, improving photosynthesis efficiency.The ecological significance of alternately pinnate leaves extends beyond their aesthetic appeal. In many cases, this leaf structure is an adaptation to specific environmental conditions. For instance, plants in areas with high wind exposure may develop alternately pinnate leaves to minimize wind resistance. By having leaflets that do not directly oppose one another, these plants can reduce the overall surface area exposed to strong winds, thus preventing damage and enhancing survival.Moreover, the arrangement of leaves can influence water retention and transpiration rates. Plants with alternately pinnate leaves may be better equipped to manage moisture loss, as the staggered leaflets can create microclimates that retain humidity around the leaf surface. This is particularly beneficial in arid environments where water conservation is crucial for survival.In conclusion, the term alternately pinnate describes a unique and functional leaf arrangement that plays a significant role in the life of many plants. By understanding this concept, we can gain deeper insights into the complexities of plant biology and ecology. The staggered arrangement of leaflets not only contributes to the beauty of the plant but also serves important functions related to light capture, wind resistance, and water management. As we explore the natural world, appreciating these intricate details can deepen our connection to the environment and enhance our understanding of the diverse strategies that plants employ to thrive in their habitats.

大自然的美常常体现在植物及其结构的复杂细节中。某些植物的一个迷人方面是它们的叶子排列，特别是当它们被描述为交替羽状时。这个术语指的是一种特定的叶子排列模式，其中小叶子沿着中央茎或轴的一侧排列，但没有任何规则的间距。这意味着小叶子不是直接相对地排列，而是沿着茎错落有致地分布，形成一种视觉上令人愉悦和复杂的结构。理解这一概念可以增强我们对植物多样性以及不同物种独特适应性的欣赏。术语交替羽状可以分为两个部分：'交替'和'羽状'。'交替'暗示了一种不均匀的排列，表明小叶子并不是在茎的对面镜像排列。相反，它们以交替的方式出现，这可以创造出更动态的外观。'羽状'这个词源于拉丁语'pinna'，意为'羽毛'，指的是叶子的结构类似于羽毛，其中多个小叶子从一个中央脉或叶柄伸出。这种排列可以在各种植物物种中看到，包括一些蕨类植物和开花植物。例如，普通黑胡桃树（Juglans nigra）展现了交替羽状的叶子，小叶子从中央茎的两侧延伸。这种类型的叶子排列允许更好的光捕获，因为小叶子可以比对面排列时更有效地展开。此外，错落的排列可以帮助减少小叶子之间的遮荫，从而提高光合作用的效率。交替羽状叶子的生态意义超出了其美学吸引力。在许多情况下，这种叶子结构是对特定环境条件的适应。例如，在高风暴露区域的植物可能会发展出交替羽状的叶子，以最小化风阻。通过使小叶子不直接相对，这些植物可以减少暴露于强风的整体表面积，从而防止损坏并增强生存能力。此外，叶子的排列可以影响水分保持和蒸腾速率。具有交替羽状叶子的植物可能更能有效管理水分流失，因为错落的小叶子可以在叶子表面周围创造微气候，保持湿度。这在干旱环境中特别有利，因为水分的保护对生存至关重要。总之，术语交替羽状描述了一种独特且功能性强的叶子排列，在许多植物的生活中发挥着重要作用。通过理解这一概念，我们可以深入了解植物生物学和生态学的复杂性。小叶子的错落排列不仅增添了植物的美感，还服务于与光捕获、抗风和水管理相关的重要功能。当我们探索自然世界时，欣赏这些复杂的细节可以加深我们与环境的联系，并增强我们对植物在栖息地中生存策略多样性的理解。