BIOL 1082 Lecture Notes - Lecture 9: Phylogenetic Tree, Non-Vascular Plant, Charophyta
Document Summary
There are a lot of pages in these sections. Plants supply oxygen and ultimately most of the food eaten by terrestrial animals. Also, plant roots create habitats for other organisms by stabilizing the soil: land plants evolved from green algae called charophytes, many key traits of land plants also appear in some algae. For example, plants are multicellular, eukaryotic, photosynthetic autotrophs, as are brown, red, and certain green algae. Plants have cell walls made of cellulose, and so do green algae, dinoflagellates, and brown algae. Represented today by three phyla of small herbaceous (nonwoody: ferns- (monilophytes phylum monilophyta) seedless vascular plants plants: liverworts, mosses, and hornworts. The sporophytes typically have horizontal stems that give rise to large leaves called fronds, often divided into leaflets. A frond grows as its coiled tip, the fiddlehead, unfurls. The gametophyte in some species shrivels and dies after the young sporophyte detaches itself.
