¿Qué ocurrió realmente ANTES de los dinosaurios? Plantas prehistóricas GIGANTES | DOCUMENTAL

🌍 Before dinosaurs ruled the Earth, our planet teemed with life and was home to an astonishing diversity of prehistoric plants. These ancient organisms shaped Earth's earliest ecosystems, creating a green world that defies imagination. Today we explore the fascinating history of prehistoric plants, from the delicate tangle of primitive ferns to the majestic conifers that dominated the landscapes before the dinosaurs. Through an in-depth exploration of the flora that preceded the age of dinosaurs, we reveal how these plants not only survived periods of massive change but also laid the foundation for plant life as we know it today. Traveling through different geological epochs, from the late Ordovician to the Permian, we will examine the unique adaptations that allowed these plants to thrive in changing environments. 🔥 As a reminder, new videos are released on SUNDAYS at 9:00 PM. ------------------------- 💥 Prehistoric Plants: Plants are defined as living beings that provide, among other things, the oxygen that humans need to live. They are photosynthetic and autotrophic organic beings that are born, develop, and die. Plants lack the ability to move and do not move on their own. They feed primarily on water and light. The first plants that arrived on Earth bore no resemblance to most of those we know today. And yet, they all evolved from these primitive algae, which today form the first link in the food chains necessary for human and animal life. Algae are living organisms that produce oxygen through photosynthesis and whose life cycle develops primarily in an aquatic environment. While some species are tiny, isolated cells, others form veritable giant underwater forests. Algae are a vital part of biodiversity and form the base of major food chains. Some marine algae live in the saltwater of the oceans, while others live in freshwater. The earliest algae found on Earth date back 500 million years, but recent research has unearthed tiny fossils of an alga called Proterocladus antiquus. Found in China, it dates back a billion years. This minuscule alga forms vast green carpets on the shallow seabed. Its fine, thread-like branches, smaller than an ant, sway with the current on the seafloor. Its structure and branching suggest that it grew upright on the seabed, forming thick mats. Proterocladus antiquus is believed to be the common ancestor of all land plants that appeared on Earth 500 million years later. Until now, these algae were confined to aquatic environments. The continental surface is devoid of life. The landscape consists solely of rocks, like vast deserts, though dotted with a few rivers. It is these rivers that allow life to break free from the water, offering plants the opportunity to occupy an ecological niche. This is how, some 500 million years ago, plants very similar to our present-day lichens and mosses conquered the dry land. These first inhabitants clung to the rocks and embraced every nook and cranny. Water did not yet circulate through their tissues. Therefore, to resist dehydration, they have the ability to revive. Plants dry out completely when there is not enough water and rehydrate as soon as it rains again. Other plants adopt a different strategy. They develop an impermeable cuticle to reduce water loss or specialized openings to maintain gas exchange. This allows them to withstand long periods without water. The spores they produce and disperse have a protective covering made of a substance similar to the chitin of arthropods. ------------------------- 🎬 Today's program: 00:00 - Introduction 04:40 - The origin of the first plants 23:54 - A true biological revolution with seed plants 39:37 - The Carboniferous period and gigantism 58:00 - The Mesozoic era, a great diversification of biodiversity This channel is an official affiliate of the ORBINEA STUDIO network.