A pteridophyte is a vascular plant (with xylem and phloem) that disperses spores.Because pteridophytes produce neither flowers nor seeds, they are sometimes referred to as "cryptogams", meaning that their means of reproduction is hidden. Ferns, horsetails (often treated as ferns), and lycophytes (clubmosses, spikemosses, and quillworts) are all pteridophytes. Classification. Polysiphonia is the model organism for Rhodophyta. Plants are mainly multicellular organisms, predominantly photosynthetic eukaryotes of the kingdom Plantae.Historically, plants were treated as one of two kingdoms including all living things that were not animals, and all algae and fungi were treated as plants. Characteristics of Rhodophyceae 3. ‘Introns occur frequently within the Chlorophyta, but within the Rhodophyta, Bangia, Porphyra, and Hildenbrandia are the only genera currently known to contain introns.’ ‘As mentioned, the clade Plantae is a bit more inclusive and also includes Rhodophyta and certain ‘green algae’ which are treated in the Eukarya section.’ Biology Multiple Choice Questions and Answers for Different Competitive Exams Read More: Sporulation. However, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes (the archaea and bacteria). The gametophytes of Polysiphonia are isomorphic (iso- meaning same, morph- meaning form), meaning they … Click on a title to look inside that book (if available): Genomics of Chloroplasts and Mitochondria (2012). ADVERTISEMENTS: In this article we will discuss about:- 1. Hypernyms ("Rhodophyta" is a kind of...): division ((biology) a group of organisms forming a subdivision of a larger category). red algae (marine algae in which the chlorophyll is masked by a red or purplish pigment; source of agar and carrageenan) Plus, get practice tests, quizzes, and personalized coaching to help you succeed. Red algae have an alternation of generations life cycle that has an extra diploid stage: the carposporophyte. Related WordsSynonymsLegend: Switch to new thesaurus Noun 1. 5. During the course of evolution, the sporophyte stage has become progressively increased.Thus, in the higher (i.e., vascular) plants the sporophyte is the dominant phase in the life cycle, whereas in the more primitive nonvascular plants the gametophyte remains dominant. The character and relative extent of the two phases vary greatly among different groups of plants and algae. Rhodophyta members of the Thallophyta division Rhodophyta, in which the chlorophyll is masked by PHYCOERYTHRIN.Rhodophytes vary from filamentous forms to those with an extensive thallus, and have gametes that are nonmotile. Meronyms (members of "Rhodophyta"): class Rhodophyceae; Rhodophyceae (coextensive with the Rhodophyta: red algae). Sporangia are produced in groups on sporophylls: Leaves that bear the sporangia are termed as sporophylls. by Ralph Bock, Volker Knoop. Primitive group of plants,body thallus type, do not divided into root,stem or leaves.thallus structure unicellular or multicellular. As a member, you'll also get unlimited access to over 83,000 lessons in math, English, science, history, and more. They are commonly known as red algae due to the presence of a water soluble red […] The sporangium is the structures in which spores are formed. Description of Rhodophyceae 2. 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