Title: 5 Non-vascular Plants and Plants Without Seeds | Laboratory Manual For SCI104 Biology II at Roxbury Community College
Headings: 5
Non-vascular Plants and Plants Without Seeds

5 Non-vascular Plants and Plants Without Seeds
5.1 Embryophytes
5.2 Non-vascular plants
5.3 Bryophytes
5.4 Mosses
5.4.1 Life cycle
5.5 View the prepared slides of mosses
5.6 Liverworts
5.6.1 Life cycle
5.7 View Prepared Slides of Liverworts
5.8 Vascular plants
5.9 Pteridophyta
5.9.1 Life cycle
5.10 Clubmosses
5.11 Spikemosses
5.12 View Prepared Slides of Selaginella
5.13 Horsetails
5.14 View Prepared Slides of Equisetum
5.15 Whisk ferns
5.16 View Prepared Slides of Psilotum
5.17 View Prepared Slides of Ferns
5.18 View Prepared Slides of Cyrtomium
5.19 View Living Organisms

Content: 5.3 Bryophytes
Bryophytes are an informal group consisting of three divisions of non-vascular land plants (embryophytes), the liverworts, hornworts and mosses. They are characteristically limited in size and prefer moist habitats although they can survive in drier environments. The bryophytes consist of about 20,000 plant species. Bryophytes produce enclosed reproductive structures (gametangia and sporangia), but they do not produce flowers or seeds. They reproduce via spores. The term “bryophyte” comes from bryon “tree-moss, oyster-green” and phyton “plant”. The defining features of bryophytes are: Their life cycles are dominated by the gametophyte stage. Their sporophytes are unbranched. They do not have a true vascular tissue containing lignin (although some have specialized tissues for the transport of water).