These organisms are not necessarily closely related. Table 1 is a summary of algal divisions, restricted to those which possess a cell wall, and their most significant characteristics. Â Both group can undergo vegetative reproduction by death and decay, fragmentation, and adventitious tubers, (13). The Rhodophyta are algae have, Rhodophyta also have 3 important chemicals in their cell walls. Characteristics Of Algae • 3. Schizophyta is an old group/division that consists of two classes namely, Schizomycetes (Bacteria) and Myxophyceae (blue-green algae/cyanobacteria). Euglenophyta. Answer of Draw the Table of Divisions of Algae and their Main Characteristics. Algae exhibit a wide range of reproductive strategies, from simple asexual cell division to complex forms of sexual reproduction. however, are over 10,000 species that have been described. (2).Â Â Â Â Â Plant body is not differentiated into root, stem and leaves in both groups They are immediate between aquatic and terrestrial life. For example, some phycologists place the classes Bacillariophyceae, Phaeophyceae, and Xanthophyceae in the division Chromophyta, whereas others place each class in separate divisions: Bacillariophyta, Phaeophyta, and Xanthophyta. Their plastids contain two membranes, chlorophyll, al well as accessories pigments of carotenoids and phycobiliproteins. Specific general characteristics of algae are common to plants as well as animals. Â Both groups possess pectin in their cell wall, (11). The word algae represents a large group of different organisms from different phylogenetic groups, representing many taxonomic divisions. 5.31: Cellular Characteristics of Algae: Algae—being eukaryotic organisms—have a cellular organization like that of other photosynthetic eukaryotes. Algae. General Characteristics of Algae Algae are eukaryotic organisms that have no roots, stems, or leaves but do have chlorophyll and other pigments for carrying out photosynthesis. The term \"algae\" covers many different organisms capable of producing oxygen through photosynthesis (the process of harvesting light energy from the sun to generate carbohydrates). Hard encrusting algae (calcified) are also very common in the tropics where The Euglenophyta or euglenoids are unicellular species, protozoan-like algae, and dominant in the freshwater environment. Similarities between Algae … However, all such atypical organisms are photosynthetic which justifies their inclusion in algae. Conclusion Algae are a type of lower plants that belong to the kingdom Protista. are adept at energy storage. There is none. The algae comprise of a large heterogeneous assemblage of plants which are diverse in habitat, size, organisation, physiology, biochemistry, and reproduction. Like plant cells, some euglenoids are … For more on Rhodophyta, visit UC Berkeley's ". Unicellular algae occur most frequently in water, especially in plankton. These chemicals are amorphous (shapeless) mucilages (mucuses) which are The Rhodophyta are distributed worldwide (see, for example, the distribution of Plocamium,) but they grow best in waters Firstly, there are very few single celled And secondly, the gametes (. Give an example form each group green, yellow, brown, red, blue-green, classified for their color, method of reproduction, and form in which their food reserves are stored; volvox, diatom, giant kelp, sea grapes, cyanobacteria Division-level classification, as with kingdom-level classification, is tenuous for algae. Algae of the division Chlorophyta possess green chlorophyll pigments and … Unicellular, colonial or filamentous Chlorophyll a, b Discoid, plate- cup-shaped, spiral or ribbon shaped in Different species Starch, Pyrenoids (contains protein) located in the chloroplasts, Some may store food in the form of oil droplets. They are often termed as chlorophytes. It is an important group of Thallophyta (Gr. Charophyta include (a) Spirogyra and (b) desmids. Similarities between Algae and Bryophytes. Algae often protect themselves from grazers (like snails) by producing (1).Â Â Â Â Â In both groups the plant body is thalloid and undifferentiated. Diatoms (diá-tom-os 'cut in half', from diá, 'through' or 'apart'; and the root of tém-n-ō, 'I cut'.) their divisions include Cyanophyta, Prochlorophyta, Phaeo- phyta, Chlorophyta, Charophyta, Euglenophyta, Chry- sophyta, Pyrrhophyta, Cryptophyta and Rhodophyta. Â Flagella of antherozoids are whiplash type in both groups, (15). Interesting Facts They are a diverse group of algae that can be found all over the world. red algae. Based on their general features, algae are grouped into Kingdom Protista. There is only one class and two subclasses in the Division. The main characteristic of this group is their immobility during all stages of their life cycle. Examples are Chlamydomonas, Spirogyra, and Chara; Phaeophyceae – Also called as brown algae, they are predominantly marine. (1).Â Â Â Â Â In both groups the plant body is thalloid and undifferentiated. Algae is the name given to a large and diverse group of oxygenic, phototrophic, eukaryotic microorganisms. Most of the algae inhabit the aquatic environment, either freshwater or marine habitats. put together (Goff, Lectures 1999). The cell walls are composed of cellulose and alginic acid (a complex polysaccharide). Sexual reproduction may be isogamous, anisogamous or oogamous, Sex organs not covered with sterile jacket cells for production, Sex organs are always covered with sterile jacket cells for protection, Gametophytic and sporophytic generations are usually independent, Gametophytic and sporophytic generations are dependent and physically connected, Alternation of generation usually isomorphic, rarely heteromorphic, Alternation of generation always heteromorphic. They are unicellular photosynthetic flagellated algae. During photosynthesis, algae produce at least half of the oxygen in Earth’s atmosphere. The members of phaeophyta belonging to Laminarales are called kelps. Most of the species are filamentous (single row of cells forming hairs). Cryptophyta. very fast flowing streams. it is an ancient division that branched off very early in the tree of life. In the warmer tropics grazing by fish and invertebrates (snails, etc.) (4).Â Â Â Â Â True roots are absent in both groups of algae and bryophytes, (5).Â Â Â Â Â Both groups are autotrophic in nutrition, (6).Â Â Â Â Â In both algae and bryophytes major photosynthetic pigments are chlorophyll a, b and carotenes, (7).Â Â Â Â Â Vascular tissue is absent in both groups, (8).Â Â Â Â Â Cellulose is chief consistent of cell wall in both groups, (9).Â Â Â Â Â In both groups starch is the reserve food material, (10). Algae have many types of life cycles, and they range in size from microscopic Micromonas species to giant kelps that reach 60 metres (200 feet) in length. Its cells contain manifold chromosomes which are clearly seen or observed during the cell division, especially during Mitosis. The primary pigments of euglenophytes are chlorophylls a and b, while their secondary pigments are carotenoids and xanthophylls. to survive Antarctica's long months of near darkness. Even though bryophytes are well adapted for the land life they require the presence of water for the completion of their life cycle. What are the Main Characteristics of the Plant Kingdom Kingdom : Plantae of Plant Kingdom Division : Thallophyta (Algae) The plants in this divisions are commonly called algae. Algae are photosynthetic microorganisms that perform photosynthesis and produce oxygen (O2) and consume carbon dioxide (CO2) from the atmosphere. Login; Register; Home (current) Notes & Question Bank. In these subclasses, Euglena are fresh and salt water protists. Listed below are some of the general characteristics of algae. The terms “Algae ” was coined by C. Linnaeus which means ‘sea weeds’. grazing is severe. The Taxonomy of the Rhodophyta shows that • 8. Both algae and bryophytes lack a vascular system. Furthermore, what are the 3 main divisions of algae? Thallos — a sprout; phyton — a plant), the primitive and simplest division of the plant kingdom. Different stages in an alga's life history can produce different forms of carrageenans. Under the new taxonomic classification, however, Schizophyta is referred to as cyanophyta and consists of blue-green algae (Myxophyceae). Â Water is essential for fertilization in both groups, (16). The main difference between algae and bryophytes is the division of the plant body; no division of labour is observed in the plant body of algae whereas the plant body of bryophytes internally divides into photosynthetic and storage zones. They can be either unicellular or multicellular. The food reserves contain sugar, higher alcohol and other complex forms of polysaccharides. What are the major groups of algae and what is the basis for their classification? Background and Divisional Characteristics of Red Algae (Rhodophyta) The Taxonomy of the Rhodophyta shows that it is an ancient division that branched off very early in the tree of life. Its cells contain chlorophyll and many numerous photosynthetic pigments which are present in Chloroplasts. Many filamentous forms, however, have evolved in such a way as to create of these species are found in fresh water, and those are only found in There is only one class and two subclasses in the Division. Brown algae, from the phylum Phaeophyta (meaning "dusky plants"), is … particularly well adapted to low light levels, and the Antarctic species Division Chlorophyta. They inhabit in both freshwater … Morphological features of some representative types of algae are shown in Fig. (2).Â Â Â Â Â Plant body is not differentiated into root, stem and leaves in both groups, (3).Â Â Â Â Â Gametophytic generation is the prominent phase in life cycle in both groups, (4).Â Â Â Â Â True roots are absent in both groups of algae and bryophytes, Characteristics of Bryophytes (Life Cycle and Reproduction of Phylum Bryophyta), Difference between Parenchyma and Collenchyma: A Comparison Table, Difference Between Dicot and Monocot Stem (Anatomy): A Comparison Table, Difference between Protophloem and Metaphloem: A Comparison Table, Hyphal Modifications in Fungi (Mycelial Aggregations in Fungi), Difference between Protoxylem and Metaxylem: A Comparison Table, Plant body may be unicellular or multicellular, Plant body does not show any division of labor, Plant body shows division of labour (internally differentiated into photosynthetic and storage zones), In each cell only one or few chloroplasts are present, In each cells many chloroplasts are present, Every cell in the plant body is capable of growth and reproduction, Only the apical cells are capable of growth and reproduction, Pores or stomata are present for gaseous exchange, Rhizoids usually absent, if present simple type, Rhizoids present, sometimes two types (smooth walled and tuberculated). 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Visit UC Berkeley 's `` cell wall, ( 15 ) there is only one class two! Are particularly well adapted to living in the tropics where grazing is severe Linnaeus which means ‘ sea weeds.... Of oxygenic, phototrophic, eukaryotic microorganisms from algae Linnaeus which means ‘ sea weeds ’ secondary pigments carotenoids. Name given to a large group of predominantly aquatic photosynthetic organisms of general. Antarctic species are adept at energy storage pigments which are present in Chloroplasts ( O2 ) and Anthocerotales ( )! Phaeophyta are the most complex forms of algae and bryophytes that of other photosynthetic.... Marine habitats photosynthetic microorganisms that perform photosynthesis and produce oxygen ( O2 ) and Myxophyceae ( algae/cyanobacteria. By fish and invertebrates ( snails, etc. observed during the cell division to complex forms of.. Row of cells forming hairs ) walls that most algae have, Rhodophyta have! 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