stomata

简明释义

英[ˈstəʊmətə]美[ˈstoʊmətə]

n. 气孔；口

英英释义

单词用法

同义词

反义词

例句

1.When the sun rises, the guard cells inflate and bulge to open the stomata, and photosynthesis begins.

当太阳升起时，这些保卫细胞充气并膨胀，打开了气孔，即开始了光合作用。

2.In Acorus both upper and lower epidermis cells are rectangle or rhombus, and the stomata apparatus are paracytic and arrange in rows along the veins.

菖蒲属叶上下表皮特征基本一致，细胞形状为长方形或近菱形，气孔器平列型，成纵行与叶脉平行排列；

3.It is suggested that NO can increase lymph absorption of the pleura by relaxing pleural lymphatic stomata.

提示，NO可以调控胸膜淋巴孔，促进胸膜腔淋巴吸收。

4.But stomata width firstly decreased, then increased.

气孔密度呈现先升高后降低。

5.The stomata mainly distribute in the granular zone.

气孔主要分布在颗粒物区。

6.The effect of Ershen Zeshu Mixture on lymphatic stomata and ascites drainage maybe have relationship with endogenous NO.

二参泽术汤调控腹膜淋巴孔，促腹水转归机制，可能与内源性NO的变化存在着密切的关系。

7.Stoma (pl. stomata) One of a large number of pores in the epidermis of plants through which gaseous exchange occurs.

植物叶片表皮存在的数目众多的小孔，打开时允许气体自由出入进行交换。

8.Included among these cells are hairs (leaves have hairs), any sort of bump or ornamentation, and most important, stomata.

这些细胞包括有毛(叶子有毛)、任何突起或纹饰，最重要的是气孔。

9.The difference in stomata characters between tissue-cultured jujube tree and original tree in field is reported in this paper.

报道了组培枣树大田苗与原种枣树大田苗在气孔性状上的差别。

10.Plants regulate gas exchange through their stomata.

植物通过它们的气孔调节气体交换。

11.During photosynthesis, stomata open to allow carbon dioxide in.

在光合作用过程中，气孔打开以允许二氧化碳进入。

12.The size of the stomata can affect a plant's water loss.

气孔的大小会影响植物的水分流失。

13.Some plants have adapted to close their stomata during the hottest part of the day.

一些植物已经适应在一天中最热的时段关闭它们的气孔。

14.Environmental factors influence the opening and closing of stomata.

环境因素影响气孔的开合。

作文

Plants are remarkable organisms that have adapted to survive in a variety of environments. One of the key features that enable plants to thrive is their ability to regulate gas exchange through small openings on their leaves known as stomata (气孔). These microscopic pores play a vital role in the plant's photosynthesis process, allowing carbon dioxide to enter and oxygen to exit. Without stomata (气孔), plants would struggle to perform photosynthesis effectively, which is essential for their growth and survival. The structure of stomata (气孔) is quite fascinating. Each stoma (气孔) consists of two specialized cells called guard cells that surround the pore. These guard cells can change shape to open or close the stomata (气孔), regulating the amount of gas exchanged. When the plant needs to take in more carbon dioxide, the guard cells swell, causing the stomata (气孔) to open. Conversely, when the plant is losing too much water, the guard cells shrink, closing the stomata (气孔) to conserve moisture. This dynamic process is crucial for maintaining the plant's internal balance and ensuring efficient photosynthesis. The opening and closing of stomata (气孔) are influenced by various environmental factors such as light, humidity, and carbon dioxide concentration. For instance, during the day when sunlight is abundant, plants typically open their stomata (气孔) to maximize carbon dioxide intake for photosynthesis. However, during hot and dry conditions, they may close their stomata (气孔) to prevent excessive water loss. This adaptation showcases the incredible resilience of plants and their ability to respond to changing environmental conditions. Moreover, stomata (气孔) are not just important for plants; they also play a significant role in the Earth's ecosystem. The oxygen released by plants through stomata (气孔) is essential for the survival of most living organisms. Additionally, the regulation of water vapor through stomata (气孔) contributes to the water cycle, impacting local and global climates. Therefore, understanding how stomata (气孔) function is crucial for comprehending broader ecological processes. In recent years, researchers have been studying stomata (气孔) to better understand their role in plant responses to climate change. As global temperatures rise and water scarcity becomes more prevalent, plants must adapt their gas exchange mechanisms to survive. By investigating the genetic and physiological traits associated with stomata (气孔) function, scientists hope to develop crops that can withstand harsher conditions while maintaining productivity. In conclusion, stomata (气孔) are essential components of plant biology, playing a critical role in photosynthesis and water regulation. Their ability to open and close in response to environmental cues highlights the adaptability of plants in various ecosystems. As we continue to explore the complexities of plant physiology, the study of stomata (气孔) will undoubtedly provide valuable insights into both plant health and the overall functioning of our planet's ecosystems.

植物是令人惊叹的生物，它们已经适应了多种环境以生存。使植物能够繁荣的关键特征之一是它们通过叶子上的小开口调节气体交换的能力，这些开口被称为stomata（气孔）。这些微小的孔在植物的光合作用过程中发挥着至关重要的作用，允许二氧化碳进入，氧气排出。没有stomata（气孔），植物将难以有效进行光合作用，而光合作用对于它们的生长和生存至关重要。 stomata（气孔）的结构非常迷人。每个stoma（气孔）由两个特殊的细胞组成，称为保卫细胞，它们围绕着孔。这些保卫细胞可以改变形状以打开或关闭stomata（气孔），调节气体交换的量。当植物需要吸入更多二氧化碳时，保卫细胞膨胀，导致stomata（气孔）打开。相反，当植物失去过多水分时，保卫细胞收缩，关闭stomata（气孔）以保持水分。这一动态过程对于维持植物内部平衡和确保有效的光合作用至关重要。 stomata（气孔）的开闭受到光、湿度和二氧化碳浓度等各种环境因素的影响。例如，在阳光充足的白天，植物通常打开它们的stomata（气孔），以最大化二氧化碳的摄取以进行光合作用。然而，在炎热和干燥的条件下，它们可能会关闭stomata（气孔），以防止过度失水。这种适应性展示了植物惊人的韧性以及它们对变化的环境条件的响应能力。 此外，stomata（气孔）不仅对植物重要，它们还在地球生态系统中发挥着重要作用。植物通过stomata（气孔）释放的氧气对于大多数生物的生存至关重要。此外，通过stomata（气孔）调节水蒸气有助于水循环，影响当地和全球气候。因此，理解stomata（气孔）的功能对于理解更广泛的生态过程至关重要。 近年来，研究人员一直在研究stomata（气孔），以更好地理解它们在植物应对气候变化中的作用。随着全球温度上升和水资源短缺问题日益严重，植物必须调整其气体交换机制以生存。通过研究与stomata（气孔）功能相关的遗传和生理特征，科学家希望开发出能够在更严酷条件下生存的作物，同时保持生产力。 总之，stomata（气孔）是植物生物学的重要组成部分，在光合作用和水分调节中发挥着关键作用。它们根据环境线索的变化而开合的能力突显了植物在各种生态系统中的适应性。随着我们继续探索植物生理的复杂性，对stomata（气孔）的研究无疑会为植物健康和我们星球生态系统的整体功能提供宝贵的见解。