NMAT Biology 27: Kinds of Plants - From Simple Mosses to Giant Angiosperms

Описание: Welcome back to the fascinating world of biology! In today’s lesson, we dive deep into the vast biodiversity of the plant kingdom, exploring everything from the ground-covering mosses to the towering forests that dominate our planet today.
We begin our journey over 500 million years ago during the Ordovician period, when the ancestors of modern land plants first began to colonize dry land. You will learn about the four main phyla: the non-vascular Bryophytes (mosses, liverworts, and hornworts) that lack specialized tissue to transport water; the first vascular plants, the Pteridophytes (ferns and horsetails), which dominated the Earth during the swampy Carboniferous period; and the seed-bearing giants of the Gymnosperm and Angiosperm groups.
We also break down the complex alternation of generations, explaining the shift from the haploid gametophyte stage to the diploid sporophyte stage. Discover why 90% of modern plant species are Angiosperms and how their "enclosed seeds" and fruits led to their unprecedented success. Finally, we clarify the roles of Fungi and Lichens, explaining why fungi are a distinct eukaryotic kingdom that digests organic matter externally, and how lichens survive as a symbiotic association between a mycobiont and a photobiont.
Whether you are a biology student or a nature enthusiast, this guide to plant taxonomy—from the artificial systems of Linnaeus to modern phylogenetic classifications—will change the way you look at every leaf and flower.
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