age of cycads

简明释义

苏铁植物时代;

英英释义

例句

1.The fossil record indicates that the age of cycads 苏铁时代 began over 200 million years ago.

化石记录表明，苏铁时代 age of cycads 开始于两亿多年前。

2.Scientists study the age of cycads 苏铁时代 to understand plant evolution.

科学家研究苏铁时代 age of cycads 以了解植物的进化。

3.The age of cycads 苏铁时代 is often referred to as the 'Age of Dinosaurs'.

人们通常将苏铁时代 age of cycads 称为“恐龙时代”。

4.The extinction of many species coincided with the end of the age of cycads 苏铁时代.

许多物种的灭绝与苏铁时代 age of cycads 的结束相吻合。

5.During the age of cycads 苏铁时代, these plants dominated the landscape.

在苏铁时代 age of cycads，这些植物主导了当时的景观。

作文

The age of cycads refers to a significant period in the history of plant evolution, notably during the Mesozoic Era, when cycads were among the dominant plants on Earth. These ancient plants are often referred to as 'living fossils' because they have existed for over 200 million years, surviving multiple mass extinctions and climatic changes. Understanding the age of cycads is crucial for appreciating the diversity of plant life and the evolutionary processes that have shaped our planet.Cycads, characterized by their stout trunks and large, compound leaves, flourished during the Jurassic and Cretaceous periods. They were not only abundant but also played a vital role in the ecosystems of their time. Their presence provided food and habitat for various prehistoric creatures, including dinosaurs. The age of cycads is often romanticized in popular culture as a time of giants, where these robust plants towered over the landscape, creating a lush environment teeming with life.Interestingly, cycads are gymnosperms, meaning they reproduce via exposed seeds rather than flowers. This reproductive strategy has allowed them to survive in various habitats, from tropical rainforests to arid deserts. The resilience of cycads throughout the age of cycads highlights their adaptability and evolutionary success. Their ability to thrive in different environments also makes them an essential study subject for botanists and paleontologists alike.The decline of cycads began with the rise of angiosperms, or flowering plants, which started to dominate terrestrial ecosystems around 100 million years ago. This transition marked the end of the age of cycads, as angiosperms offered new advantages, such as more efficient reproduction and greater ecological versatility. Despite their decline, cycads continue to exist today, albeit in much-reduced numbers and diversity compared to their prehistoric ancestors.In modern times, cycads are facing new threats due to habitat destruction, climate change, and illegal collection. Conservation efforts are crucial to protect these ancient plants and their genetic diversity. The age of cycads serves as a reminder of the importance of preserving biodiversity and understanding the long-term impacts of environmental changes.Studying the age of cycads provides insights into the resilience of life on Earth and the intricate relationships between different species and their environments. It encourages us to reflect on our role in the ecosystem and the responsibility we have to safeguard the natural world for future generations. By learning about the past, we can better appreciate the present and work towards a sustainable future.

“苏铁时代”是指植物进化史上一个重要的时期，特别是在中生代，当时苏铁是地球上占主导地位的植物之一。这些古老的植物常被称为“活化石”，因为它们已经存在了超过两亿年，经历了多次大规模灭绝和气候变化。理解“苏铁时代”对于欣赏植物生命的多样性以及塑造我们星球的进化过程至关重要。苏铁以其粗壮的树干和大型复叶为特征，在侏罗纪和白垩纪时期繁盛。它们不仅数量庞大，而且在当时的生态系统中发挥了重要作用。它们的存在为各种史前生物，包括恐龙，提供了食物和栖息地。“苏铁时代”在流行文化中常被浪漫化，描绘为一个巨人的时代，这些强壮的植物高耸于地面，创造了一个充满生机的环境。有趣的是，苏铁是裸子植物，意味着它们通过暴露的种子而不是花朵进行繁殖。这种繁殖策略使它们能够在热带雨林到干旱沙漠等各种栖息地中生存。苏铁在“苏铁时代”中的韧性突显了它们的适应能力和进化成功。它们在不同环境中蓬勃发展的能力也使它们成为植物学家和古生物学家研究的重要对象。苏铁的衰退始于开花植物（或被子植物）的兴起，后者在大约一亿年前开始主导陆地生态系统。这一转变标志着“苏铁时代”的结束，因为被子植物提供了新的优势，如更高效的繁殖和更大的生态多样性。尽管它们的衰退，苏铁至今仍然存在，尽管与它们史前祖先相比，数量和多样性大幅减少。在现代，苏铁面临着栖息地破坏、气候变化和非法采集等新威胁。保护工作对于保护这些古老植物及其遗传多样性至关重要。“苏铁时代”提醒我们保护生物多样性的重要性，以及理解环境变化的长期影响。研究“苏铁时代”提供了对地球生命韧性的深入见解，以及不同物种与其环境之间复杂关系的认识。它促使我们反思自己在生态系统中的角色，以及我们有责任为未来世代保护自然世界。通过了解过去，我们可以更好地欣赏现在，并朝着可持续的未来努力。