Newton County School System. The Newton County Schools System is a public school district in Newton County, Georgia, United States, based in Covington. It serves the communities of Covington, Mansfield, Newborn, Oxford, Porterdale, and Social Circle. 1 Schools 1.1 Elementary schools.
Liverwort species may be either dioicous or monoicous. In dioicous liverworts, female and male sex organs are borne on different and separate gametophyte plants. In monoicous liverworts, the two kinds of reproductive structures are borne on different branches of the same plant.ome of the more familiar species grow as a flattened leafless thallus, but most species are leafy with a form very much like a flattened moss. Leafy species can be distinguished from the apparently similar mosses on the basis of a number of features, including their single-celled rhizoids.
Bryophytes, the mosses, liverworts and hornworts, are the most primitive terrestrial plants surviving today. Many fossils of plants long extinct bear features similar to the modern Bryophytes, particularly, their lack of vascular systems. Based upon genetic analysis, it seems that liverworts are the most primitive of the three kinds, and mosses the closest relatives to vascular plants. Bryophytes are the second largest group of land plants in the world today with over 20,000 species.