thigmotropism

简明释义

英[ˌθɪgmə(ʊ)ˈtrəʊpɪz(ə)m]美[θɪɡˈmɑtrəpɪzm]

n. [生物] 向触性

英英释义

单词用法

同义词

反义词

例句

1.Thigmotropism ( haptotropism ) A tropism in which the stimulus is touch.

向触性：生物体接触到刺激时发生向性运动。

2.Thigmotropism ( haptotropism ) A tropism in which the stimulus is touch.

向触性：生物体接触到刺激时发生向性运动。

3.In a garden, observing thigmotropism in action can reveal a lot about plant behavior.

在花园里观察触觉趋向性的作用可以揭示很多关于植物行为的信息。

4.The study of thigmotropism helps us understand how plants adapt to their environment.

对触觉趋向性的研究有助于我们理解植物如何适应环境。

5.The vine demonstrated strong thigmotropism, wrapping around the trellis as it grew.

这株藤蔓表现出强烈的触觉趋向性，随着生长缠绕在了格架上。

6.Some climbing plants rely on thigmotropism to find support as they grow upwards.

一些攀缘植物依靠触觉趋向性在生长过程中寻找支撑。

7.Plants like peas exhibit thigmotropism by curling their tendrils around nearby objects.

像豌豆这样的植物通过将卷须缠绕在附近物体上来表现触觉趋向性。

作文

In the world of botany, plants exhibit a variety of fascinating behaviors that allow them to adapt to their environments. One such behavior is thigmotropism, which refers to the growth or movement of a plant in response to touch or physical contact. This phenomenon can be observed in many climbing plants, such as vines and creepers, that utilize surrounding structures for support as they grow upwards. The ability to respond to touch not only helps these plants reach sunlight but also ensures their survival in competitive ecosystems.The mechanism behind thigmotropism involves specialized cells that can detect physical stimuli. When a plant's tendril or stem comes into contact with an object, it triggers a series of physiological changes. These changes often lead to differential growth; the side of the plant that is in contact with the object may grow more slowly than the opposite side, causing the plant to bend towards the support. This adaptive response allows climbing plants to efficiently navigate their environment, ensuring they can access sunlight while minimizing the risk of being shaded by other vegetation.An excellent example of thigmotropism can be seen in the common garden pea (Pisum sativum). The tendrils of this plant are highly responsive to touch. When a tendril encounters a nearby structure, it wraps around it, providing stability and support for the growing plant. This wrapping action not only secures the plant but also enhances its ability to photosynthesize by elevating it towards the light. Without thigmotropism, many climbing plants would struggle to thrive in their natural habitats.Moreover, thigmotropism is not limited to climbing plants. Some non-climbing species also exhibit this behavior, although in different forms. For instance, the sensitive plant (Mimosa pudica) responds to touch by folding its leaves. This rapid response is thought to serve as a defense mechanism against herbivores, making the plant less palatable and more difficult to consume. Such examples highlight the diverse ways in which plants have evolved to interact with their surroundings, showcasing the importance of thigmotropism in the plant kingdom.The study of thigmotropism extends beyond mere observation; it has practical implications in agriculture and horticulture. Understanding how plants respond to touch can inform techniques for training climbing plants on trellises or supports, optimizing space in gardens and farms. Additionally, research into the cellular mechanisms of thigmotropism could lead to advancements in genetically modifying plants for better growth patterns or resilience.In conclusion, thigmotropism is a remarkable adaptive trait that illustrates the intricate relationship between plants and their environments. Through their ability to respond to touch, plants can secure themselves, optimize their growth, and enhance their chances of survival. As we continue to explore the complexities of plant behavior, the significance of thigmotropism remains a captivating subject that bridges ecology, biology, and agriculture, reminding us of the wonders of the natural world.

在植物学的世界中，植物展现出多种迷人的行为，使它们能够适应环境。其中一种行为是触性向性（thigmotropism），指的是植物在接触或物理接触时的生长或运动。这种现象可以在许多攀爬植物中观察到，如藤本植物和匍匐植物，它们利用周围的结构作为支撑向上生长。响应触觉的能力不仅帮助这些植物获取阳光，还确保它们在竞争激烈的生态系统中的生存。触性向性（thigmotropism）背后的机制涉及能够检测物理刺激的专门细胞。当植物的卷须或茎与物体接触时，会触发一系列生理变化。这些变化通常导致生长的差异；与物体接触的植物侧可能生长得比对侧慢，从而使植物向支撑物弯曲。这种适应性反应使攀爬植物能够有效地导航其环境，确保它们可以获取阳光，同时最小化被其他植被遮蔽的风险。一个很好的触性向性（thigmotropism）例子可以在常见的豌豆（Pisum sativum）中看到。这种植物的卷须对触摸高度敏感。当卷须遇到附近的结构时，它会缠绕在其周围，为生长中的植物提供稳定性和支持。这种缠绕动作不仅固定了植物，还通过将其抬高到光源处增强了其光合作用的能力。如果没有触性向性（thigmotropism），许多攀爬植物将难以在其自然栖息地中茁壮成长。此外，触性向性（thigmotropism）并不限于攀爬植物。一些非攀爬物种也表现出这种行为，尽管形式不同。例如，含羞草（Mimosa pudica）对触摸的反应是折叠其叶子。这种快速反应被认为是一种防御机制，可以抵御食草动物，使植物变得不那么可口，更难以消耗。这些例子突显了植物如何进化以与其环境互动的多样方式，展示了触性向性（thigmotropism）在植物王国中的重要性。对触性向性（thigmotropism）的研究不仅限于观察；它在农业和园艺中也具有实际意义。了解植物如何响应触摸可以为训练攀爬植物在棚架或支撑物上的技术提供信息，优化花园和农场的空间。此外，研究触性向性（thigmotropism）的细胞机制可能会导致基因改良植物以获得更好的生长模式或抗逆性的进步。总之，触性向性（thigmotropism）是一种显著的适应性特征，展示了植物与其环境之间错综复杂的关系。通过对触觉的响应，植物可以固定自身，优化其生长，并增强其生存机会。随着我们继续探索植物行为的复杂性，触性向性（thigmotropism）的重要性仍然是一个迷人的主题，连接着生态学、生物学和农业，提醒我们自然界的奇迹。