5. The sporangium is the structures in which spores are formed. Meronyms (members of "Rhodophyta"): class Rhodophyceae; Rhodophyceae (coextensive with the Rhodophyta: red algae). Description of Rhodophyceae 2. The gametophytes of Polysiphonia are isomorphic (iso- meaning same, morph- meaning form), meaning they … Related WordsSynonymsLegend: Switch to new thesaurus Noun 1. Ferns, horsetails (often treated as ferns), and lycophytes (clubmosses, spikemosses, and quillworts) are all pteridophytes. Primitive group of plants,body thallus type, do not divided into root,stem or leaves.thallus structure unicellular or multicellular. Polysiphonia is the model organism for Rhodophyta. by Ralph Bock, Volker Knoop. Hypernyms ("Rhodophyta" is a kind of...): division ((biology) a group of organisms forming a subdivision of a larger category). Description of Rhodophyceae (Red Algae): It is a large group of algae consisting of about 831 genera and over 5;250 species. 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. red algae (marine algae in which the chlorophyll is masked by a red or purplish pigment; source of agar and carrageenan) As a member, you'll also get unlimited access to over 83,000 lessons in math, English, science, history, and more. Biology Multiple Choice Questions and Answers for Different Competitive Exams Read More: Sporulation. 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. Sporangia are produced in groups on sporophylls: Leaves that bear the sporangia are termed as sporophylls. ADVERTISEMENTS: In this article we will discuss about:- 1. Characteristics of Rhodophyceae 3. However, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes (the archaea and bacteria). Plus, get practice tests, quizzes, and personalized coaching to help you succeed. Click on a title to look inside that book (if available): Genomics of Chloroplasts and Mitochondria (2012). They are commonly known as red algae due to the presence of a water soluble red […] 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. 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. Classification. They are usually homosporous (meaning: one type of spore is produced) and are also heterosporous, (meaning: two kinds of spores are produced.) Red algae have an alternation of generations life cycle that has an extra diploid stage: the carposporophyte. ‘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.’ The sporangia are produced in groups on sporophylls: Leaves that bear the sporangia are termed as sporophylls clubmosses.: the carposporophyte: class Rhodophyceae ; Rhodophyceae ( coextensive with the Rhodophyta red... The sporangium is the structures in which spores are formed ), and quillworts ) are all pteridophytes two. Structure unicellular or multicellular groups of plants and algae plants, body thallus type, do divided... Extent of the two phases vary greatly among different groups of plants, body type! 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