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.
Liverworts are primitive nonvascular plants, perhaps the most primitive true plants still in existence. There are two types. In thallose liverworts, the plant body (thallus) consists of flattened masses of cells that look leafy but show little differentiation into different cell types.oth types of liverworts are small, in the range of a few millimeters to a few centimeters, and easily overlooked. Some species, however, are conspicuous members of the forest-floor flora and may be much easier to find. One of these is Marchantia polymorpha. a thallose species.
Liverworts have a gametophyte-dominant life cycle, with the sporophyte dependent on the gametophyte. Cells in a typical liverwort plant each contain only a single set of genetic information, so the plant's cells are haploid for the majority of its life cycle.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.