essay "种子(seed)" 400 words, english translation and finally vocabulary

时间: 2024-09-21 03:58:16

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Seed

A seed is a remarkable and intricate structure that holds the potential for new life. It is the fundamental unit of plant reproduction, containing the embryo, the food reserve, and the protective outer layers. The seed is a testament to the incredible adaptability and resilience of plants, as it has evolved to ensure the survival and propagation of the species.

At the heart of the seed lies the embryo, a miniature plant that is poised to grow and develop into a mature plant. The embryo is nourished by the endosperm, a nutrient-rich tissue that provides the necessary energy and resources for the initial stages of germination. This endosperm can take various forms, such as starch, oil, or protein, depending on the plant species.

Surrounding the embryo and endosperm is the seed coat, a protective layer that shields the delicate contents from environmental hazards. The seed coat is often tough and impermeable, preventing water and air from entering prematurely and ensuring the embryo remains dormant until the right conditions for germination arise.

The remarkable adaptability of seeds is evident in their diverse forms and strategies. Some seeds are small and lightweight, easily dispersed by wind or water, while others are larger and more dense, relying on animals or gravity for distribution. Some seeds have specialized structures, such as wings or hooks, that aid in their dispersal, while others have a hard outer shell that must be broken down before germination can occur.

The process of seed germination is a true marvel of nature. When the right environmental conditions are met, such as adequate moisture, temperature, and oxygen, the seed coat softens, and the embryo begins to emerge. The radicle, or embryonic root, is the first to emerge, anchoring the seedling in the soil and drawing in water and nutrients. The cotyledons, or seed leaves, then unfurl, providing the young plant with the energy and resources it needs to continue growing.

As the seedling develops, it begins to produce its own leaves, stems, and roots, drawing sustenance from the soil and the sun. This remarkable transformation, from a seemingly dormant seed to a thriving plant, is a testament to the incredible resilience and adaptability of the natural world.

In conclusion, the seed is a remarkable and intricate structure that holds the key to the continued survival and propagation of plant life. Its diverse forms, strategies, and adaptations have allowed plants to thrive in a wide range of environments, making them a fundamental component of the Earth's ecosystems. By understanding the complexities of the seed, we can gain a deeper appreciation for the incredible processes that sustain life on our planet.

English Translation:

种子

种子是一种非凡而复杂的结构，蕴含着新生命的潜力。它是植物繁殖的基本单位，包含胚胎、食物储备和保护性外层。种子证明了植物令人难以置信的适应性和弹性，因为它已经进化到确保物种生存和繁殖的程度。

种子的核心是胚胎，这是一种准备生长并发育成成熟植物的微型植物。胚胎由胚乳滋养，胚乳是一种营养丰富的组织，为发芽的初始阶段提供必要的能量和资源。这种胚乳可以采取各种形式，例如淀粉、油或蛋白质，具体取决于植物种类。

种皮包裹着胚胎和胚乳，这是一种保护层，可以保护脆弱的内容物免受环境危害。种皮通常坚韧且不透水，可防止水和空气过早进入，并确保胚胎保持休眠状态，直到出现适合发芽的条件。

种子的适应性非常强，这体现在它们多样的形式和传播策略上。有些种子又小又轻，很容易被风或水传播，而另一些种子则更大更密集，依靠动物或重力进行传播。有些种子有特殊的结构，如翅膀或钩子，有助于传播，而另一些种子有坚硬的外壳，必须先将其分解才能发芽。

种子发芽的过程是大自然的真正奇迹。当满足适当的环境条件，如充足的水分、温度和氧气时，种皮会变软，胚芽开始出现。胚根或胚根最先出现，将幼苗固定在土壤中，并吸收水分和养分。然后子叶或种子叶展开，为幼苗提供继续生长所需的能量和资源。

随着幼苗的发育，它开始长出自己的叶子、茎和根，从土壤和阳光中吸收营养。这种从看似休眠的种子到茁壮成长的植物的惊人转变，证明了自然界令人难以置信的恢复力和适应性。

总之，种子是一种非凡而复杂的结构，是植物生命持续生存和繁殖的关键。它的多种形式、策略和适应性使植物能够在各种环境中茁壮成长，使它们成为地球生态系统的基本组成部分。通过了解种子的复杂性，我们可以更深入地了解维持地球上生命的惊人过程。

Vocabulary:

1. Seed: the unit of plant reproduction, containing the embryo, endosperm, and seed coat.

2. Embryo: the miniature plant within the seed, poised to grow and develop.

3. Endosperm: the nutrient-rich tissue that nourishes the embryo during germination.

4. Seed coat: the protective outer layer that shields the delicate contents of the seed.

5. Germination: the process by which the seed sprouts and the embryo begins to grow.

6. Radicle: the embryonic root that emerges first during germination, anchoring the seedling in the soil.

7. Cotyledons: the seed leaves that unfurl, providing the young plant with energy and resources.

8. Dormant: in a state of temporary inactivity or suspended animation.

9. Dispersal: the act of spreading or distributing seeds to new locations.

10. Adaptability: the ability to adjust to different conditions or environments.