photonasty

简明释义

英[/foʊtəˈnæsti/]美[/foʊtəˈnæsti/]

n. 感光性

英英释义

单词用法

同义词

反义词

例句

1.Photonasty a nastic movement in response to light.

响应光刺激的向性运动。

2.Photonasty a nastic movement in response to light.

响应光刺激的向性运动。

3.The opening and closing of the flower petals are a classic example of photonasty, which means 光敏性运动.

花瓣的开放和闭合是一个经典的photonasty例子，这意味着光敏性运动。

4.Many plants exhibit photonasty in response to sunlight, displaying 光敏性运动 throughout the day.

许多植物对阳光表现出photonasty，在一天中展现出光敏性运动。

5.Observing how the leaves turn towards the light is an observation of photonasty, or 光敏性运动.

观察叶子如何朝向光线是对photonasty或光敏性运动的观察。

6.The rapid movement of flowers opening at dawn is a fascinating display of photonasty, which refers to 光敏性运动.

花朵在黎明时分快速开放的运动是photonasty的迷人展示，这指的是光敏性运动。

7.Some species of Mimosa show photonasty by folding their leaves at night, indicating 光敏性运动.

某些含羞草种类通过在夜间折叠叶子来展示photonasty，这表明光敏性运动。

作文

In the world of botany, plants exhibit a variety of fascinating behaviors that allow them to adapt to their environment. One such behavior is known as photonasty, which refers to the movement of plant parts in response to light stimuli. This phenomenon is particularly interesting because it highlights how plants are not stationary organisms; rather, they actively respond to their surroundings to optimize their growth and survival. Understanding photonasty can provide insights into the complex interactions between plants and their environment, as well as the evolutionary advantages these movements confer. Plants utilize photonasty to enhance their ability to capture sunlight, which is crucial for photosynthesis. For instance, flowers may open or close in relation to the intensity of light. This movement not only maximizes their exposure to sunlight but also helps in attracting pollinators during the day when light is abundant. Conversely, at night, many flowers close to conserve energy and protect their reproductive structures from potential harm. This rhythmic opening and closing is a perfect example of how photonasty plays a vital role in a plant's reproductive success. Moreover, photonasty is not limited to flowers alone. Leaves and stems also exhibit this fascinating behavior. For example, some plants have leaves that will orient themselves towards the sun throughout the day, a process known as heliotropism. This is a specific type of photonasty where the movement is directed by the position of the sun. By adjusting their angle, leaves can maximize light absorption, thereby enhancing their photosynthetic efficiency. This adaptive trait is essential for plants growing in competitive environments where access to light is limited. The study of photonasty extends beyond just understanding plant behavior; it also has practical applications in agriculture and horticulture. By selecting plant varieties that exhibit strong photonasty, farmers can increase crop yields and improve the overall health of their plants. For instance, crops that can effectively adjust their leaf orientation in response to light can thrive better in varying light conditions, leading to more robust growth and higher productivity. Additionally, researchers are exploring the genetic and molecular mechanisms behind photonasty. By understanding the genes responsible for this behavior, scientists can potentially engineer plants with enhanced abilities to respond to light. This could lead to innovations in sustainable agriculture practices, as plants that can efficiently utilize available light will require fewer resources, such as water and fertilizers. In conclusion, photonasty is a remarkable aspect of plant biology that illustrates the dynamic nature of plants in their quest for survival. Through movements in response to light, plants optimize their growth, attract pollinators, and improve their chances of reproductive success. As we continue to study and understand photonasty, we uncover not only the intricate relationships within ecosystems but also the potential for advancing agricultural practices to meet the demands of a growing global population. The exploration of photonasty is a testament to the ingenuity of nature and its ability to adapt to ever-changing environments.

在植物学的世界中，植物表现出多种迷人的行为，使它们能够适应环境。其中一种行为被称为光向性，指的是植物部分对光刺激的运动。这一现象尤其有趣，因为它突显了植物并不是静止的生物；相反，它们积极响应周围环境，以优化其生长和生存。理解光向性可以提供对植物与环境之间复杂相互作用的洞察，以及这些运动所带来的进化优势。 植物利用光向性来增强其捕获阳光的能力，这对光合作用至关重要。例如，花朵可能会根据光的强度打开或关闭。这种运动不仅最大限度地增加了它们对阳光的暴露，还帮助在白天光线充足时吸引授粉者。相反，在夜间，许多花朵闭合以节省能量，并保护其生殖结构免受潜在伤害。这种有节奏的开启和关闭是光向性在植物繁殖成功中发挥重要作用的完美例证。 此外，光向性不仅限于花朵。叶子和茎也表现出这种迷人的行为。例如，一些植物的叶子会在一天中随着太阳的位置而调整方向，这一过程被称为日向性。这是一种特定类型的光向性，其运动由太阳的位置决定。通过调整角度，叶子可以最大化光的吸收，从而增强光合作用的效率。这种适应性特征对于在竞争环境中生长的植物至关重要，那里光照有限。 对光向性的研究不仅仅是理解植物行为；它在农业和园艺中也具有实际应用。通过选择表现出强烈光向性的植物品种，农民可以增加作物产量并改善植物的整体健康。例如，能够有效调整叶子朝向以响应光线的作物，可以更好地在不同的光照条件下生长，从而导致更强健的生长和更高的生产力。 此外，研究人员正在探索光向性背后的遗传和分子机制。通过了解负责这种行为的基因，科学家们可以潜在地改造植物，使其具备更强的光响应能力。这可能会在可持续农业实践中带来创新，因为能够有效利用可用光的植物将需要更少的资源，如水和肥料。 总之，光向性是植物生物学中的一个显著方面，展示了植物在求生过程中动态的特性。通过对光的响应运动，植物优化其生长，吸引授粉者，并提高繁殖成功的机会。随着我们继续研究和理解光向性，我们不仅揭示了生态系统内部的复杂关系，还揭示了推进农业实践以满足不断增长的全球人口需求的潜力。对光向性的探索是自然智慧的证明，展示了自然适应不断变化环境的能力。