sclerenchyma

简明释义

英[sklɪəˈreŋkɪmə]美[sklɪˈreŋkɪmə]

n. [植] 厚壁组织

英英释义

单词用法

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例句

1.Having the epidermis, cortex, starch sheath, perivascular sclerenchyma, six vascular bundles, pith and pith ray, the stem is similar to the root in their structure.

该植物茎与根茎的构造相似，均有表皮、皮层、淀粉鞘、周维纤维、六束维管束、髓及髓射线。

2.Question 16. Collenchyma and sclerenchyma are plant support tissues.

厚角组织及厚壁组织为植物的支持组织。

3.Lignified tissues include SCLERENCHYMA and XYLEM.

木质素组织包括厚壁组织和木质部。

4.The degree of lignification varies from slight in protoxylem to heavy in sclerenchyma and some xylem vessels, but values of 25-30% lignin and 50% cellulose are average.

不同部位的木质化的程度不同，原生木质部中只有轻微的加厚，而在厚壁组织和一些木质部导管中则进一步加厚，平均含25%-30%的木质素和50%的纤维素。

5.Sclerenchyma cells are a more common type of supporting cell.

厚壁组织细胞是一种常见的支持细胞类型。

6.Sclerenchyma cells are a more common type of supporting cell.

组织细胞是一种常见的支持细胞类型。

7.Reductions of cell wall thickness and birefringence were observed in both fiber (sclerenchyma) and parenchymal cells, together with blurring of the wall's layered structures.

厚壁细胞和薄壁细胞的细胞壁厚度减小，双折射也降低，并且细胞壁的分层现象变得不明显。

8.Sclerenchyma is often found associated with vascular tissue and exists as two distinct types of cell: the long FIBER and the shorter SCLEREID.

厚壁组织由两种形式截然不同的细胞组成：较长的纤维和较短的石细胞。

9.Their internal structures consist of air passages, vascular bundles of various size, ground tissues and sclerenchyma.

它们的内部结构是由气道、不同大小的维管束、基本组织以及厚壁组织组成。

10.The fibers you feel when eating a pear are made of sclerenchyma.

你在吃梨时感觉到的纤维是由厚壁组织构成的。

11.Researchers study sclerenchyma to understand plant strength and resilience.

研究人员研究厚壁组织以理解植物的强度和韧性。

12.In many fruits, sclerenchyma provides structural support.

在许多水果中，厚壁组织提供了结构支持。

13.The sclerenchyma cells are dead at maturity, providing support without metabolic cost.

厚壁组织细胞在成熟时是死亡的，提供支持而不需要代谢成本。

14.The rigidity of the plant stem is due to the presence of sclerenchyma.

植物茎的坚硬性是由于存在厚壁组织。

作文

In the study of plant biology, various types of tissues play crucial roles in the growth and development of plants. One such type of tissue is known as sclerenchyma, which is vital for providing structural support to plants. This tissue is characterized by its thick, lignified cell walls, which make it rigid and strong. The primary function of sclerenchyma (木纤维组织) is to support the plant, especially in areas that require extra strength to withstand various environmental stresses. There are two main types of sclerenchyma: fibers and sclereids. Fibers are long, slender cells that are often found in bundles, providing tensile strength to the plant. They are commonly found in stems and leaves, where they help maintain the integrity of the plant structure. On the other hand, sclereids are shorter and more irregularly shaped, contributing to the hardness of certain fruits and seeds. For instance, the gritty texture of pear fruit is due to the presence of sclereids, a type of sclerenchyma (木纤维组织). The development of sclerenchyma occurs during the secondary growth phase of plants. As the plant matures, it requires additional support to sustain its weight and resist external forces, such as wind and rain. This is where sclerenchyma becomes essential. It provides not only physical strength but also plays a role in the overall health of the plant by allowing it to reach greater heights and expand its foliage. In addition to its structural role, sclerenchyma also serves other functions within the plant. For example, it can store nutrients and water, helping the plant survive during periods of drought. The presence of sclerenchyma (木纤维组织) in various plant parts indicates a well-adapted organism capable of thriving in diverse environments. Furthermore, understanding sclerenchyma is crucial for agricultural practices and horticulture. Farmers and gardeners can manipulate the growth conditions of plants to enhance the development of sclerenchyma. This can lead to stronger plants that are better equipped to handle pests and diseases. For instance, by optimizing soil composition and moisture levels, one can encourage the growth of sclerenchyma, resulting in healthier crops. In conclusion, sclerenchyma (木纤维组织) is an integral part of plant anatomy that contributes significantly to the plant's structural integrity and overall health. Its unique characteristics allow plants to thrive in various environments, making it a key area of study for botanists and horticulturists alike. By understanding the importance of sclerenchyma, we can appreciate the complexity of plant life and the adaptations that enable them to survive and flourish on Earth.

在植物生物学的研究中，各种类型的组织在植物的生长和发育中发挥着至关重要的作用。其中一种组织被称为sclerenchyma，它对于提供植物的结构支持至关重要。这种组织的特点是其厚实的木质化细胞壁，使其坚硬而强壮。sclerenchyma（木纤维组织）的主要功能是支持植物，尤其是在需要额外强度以抵御各种环境压力的区域。sclerenchyma有两种主要类型：纤维和石细胞。纤维是细长的细胞，通常成束地存在，提供植物的抗拉强度。它们通常存在于茎和叶中，帮助维持植物结构的完整性。另一方面，石细胞更短且形状不规则，有助于某些水果和种子的坚硬。例如，梨果的沙粒质感就是由于石细胞的存在，这是一种sclerenchyma（木纤维组织）。sclerenchyma的发育发生在植物的次生生长阶段。当植物成熟时，它需要额外的支持来承受其重量并抵御外部力量，如风和雨。这时，sclerenchyma变得至关重要。它不仅提供物理强度，还在植物的整体健康中发挥作用，使其能够达到更高的高度并扩展叶片。除了其结构作用外，sclerenchyma还在植物内部发挥其他功能。例如，它可以储存养分和水分，帮助植物在干旱时期生存。sclerenchyma（木纤维组织）在各种植物部分的存在表明它是一种适应良好的生物，能够在多样的环境中茁壮成长。此外，理解sclerenchyma对于农业实践和园艺也至关重要。农民和园丁可以操控植物的生长条件，以增强sclerenchyma的发育。这可以导致更强壮的植物，更好地应对害虫和疾病。例如，通过优化土壤成分和水分水平，可以促进sclerenchyma的生长，从而产生更健康的作物。总之，sclerenchyma（木纤维组织）是植物解剖学中不可或缺的一部分，对植物的结构完整性和整体健康产生重大影响。它独特的特性使植物能够在各种环境中生存，使其成为植物学家和园艺师的重要研究领域。通过理解sclerenchyma的重要性，我们可以欣赏植物生命的复杂性及其适应能力，使其能够在地球上生存和繁荣。