Flagella are attached at anterior end of cell. Nucleus is dinokaryoyic or mesokaryo­tic in nature. Cells are very small (3-5µm) and appear as small spheres with indis­tinct protoplasm. stream Dinoflagellata. <> Group 1 consists of prokaryotic algae known as Cyanophyta or blue-green algae. Dinoflagellata e.g., Elastodinium, Heterocapsa. e. Some lower members have naked pyrenoid like bodies. The metabolic or assimilatory food products. Photosynthetic pigments: They possesses chlorophyll a, chlorophyll b and small amount of β-carotenoids. The dominant pigments are xanthophylls which give red or brown colouration. 1. e.g., Laminaria, Chorda etc. 2. Robert Edward Lee’s Classification (1989) CLASSIFICATION OF ALGAE PROPOSED BY F.E. Chlorophyll a and c2 are present in the chloroplasts, with peridinin and neo- peridinin being the main carotenoids. The epicone and hypocone are normally divided into a number of thecal plates. Common genera: Cyathomonas, Chilomonas etc. Division. Sexual reproduction involves the forma­tion of a dominant zygote. algae classification by lee the science of algae north inlet winyah bay national. The freshwater red algal genus Sheathia contains species with heterocortication (both bulbous and cylindrical cells covering the main axis) and homocortication (only cylindrical cells). 2. Presence of chlorophylls a and d, phy­cobiliproteins include r-phycocyanin, allophycocyanin, and three forms of phycoerythrins (b, r and c). 3. and (c) chloro­plast surrounded by two membranes of chloro­plast endoplasmic reticulum (E.R). Class. Chloroplast with one thylakoid per band and no chloroplast endoplasmic reticulum. Most live in fresh water, but some are found in marine and soil habitats. 5. Plants are found in both marine and fresh water habitat. 2. 2. The eukaryotic algae are further divided into three groups: (a) Chloroplast surrounded only by the two mem­branes of the chloroplast envelope. e.g., Chlamydomonas, Volvox. 2. Eukaryotic algae with chloroplast sur­rounded only by the two membranes of the chloroplast envelope. • Thus, Phycology or algology is the study of the algae (singular, alga). Chlorococcales. e.g., Oedogonium, Oedocladium, Bulbochaete. They have tentacles or rhizopodia on basically amoeboid vegetative cells. algae classification by lee dewage de. The class has been divided into seven (7) orders: ii. Class. Classification: F.E. Biddulphiales. Dr. Poonam Jaiswal, Lecturer Botany, JDB Govt. Examples are Chlamydomonas, Spirogyra, and Chara Phaeophyceae – Also called as brown algae, they are predominantly marine. The class has been divided into five (5) orders: i. Chroococcales e.g., Gloeocapsa, Chroo- coccus. 2. It is a group of unicellular flagellates characterised by the possession of a haptonema between two smooth flage­lla. x��YK�^G܏4��.�/���~H(����E�b0Ǒ�� ��:u�z����"��3�8}U�=�ï�_���W��x��O?�>{�h���U��B�)����Z�����ꯟl���~}�����W��7�ï����cN-�ro�w�\_���j���G�vg��n�>{��J������o��u{���B�q�����*�n_�m/�U�^���>�Vz�{��,{��֏O��Z,{:~�&�I���_9�0|q�3�=��������l�Q�Us�5�m �^�7��W�1qM���3��#gL��=�}K���Ow���������t$!KB.uE��o͢��>ˈ��^a�y�!�8�E��7��vz/���T�-#����B?��G��cB���_}���WM���n���d����������F�!��� Cٳ�r�' u��s���:CC�{�&�$�Eƚ!�(Xd� ���M)k"ŗ�0�;8�᠍���u�r�������!��>�ܞ/wA�G;�h(yNA��a�� c�Y�,�1��d�;��pj����VEa�y�����n�Wd����Ɔ���,7*��ϱ�$��+ �vp��nk[�.� �P�p�� (i�-�a�w� ,��O���H ��o%�P5 we�*Z¾p�h�� I��h[����y��'��;�`���U���p�F i���n~g��$v�{�J �^ͯ���RA���VK�{�f��(�%;� 4`y�C����F�dCa�hP�Ա�A�FTO��h�R��x����a������j%��UĘ�@���+��=D��1��X�Ji�X)�ig� âLy��lժ/� GCǰؔ��ٱ���Mj��_��E6̯�-r�#7`3b�6i�"�()�Z���*7 �N0Ez�D�l[FU�lmZ���f����|"z��2,45v � �$;���%�R^wv �����3�V��'3UQr��ߣ��T�= p�/�f�5�D[�iM�~g��6����^1vpK'E.�i�l �`���M5 �Q�e��lr�(���OE"=�oQxcZ �)�!�b. Class. e. Flagella if present are equal in length and are situated anteriorly. Ceramiales. 7. Chloro­phylls a and b, one flagellum with a spiral row of fibrillar hairs; proteinaceous pellicle in strips under the plasma membrane; sto­rage product paramylon; characteristic type of cell division. Lemaneales. Presence of Chlorophyll a and d, Phycobiliproteins includes r-phyco- cyanin, allophycocyanin and three forms of phycoerythrins (b, r and c). Share Your Word File Choloroplast endoplasmic reticulum present. Dictyochophyceae (silicoflagellates): 2. 1. G. Class. Depending on the mode of nutrition, they may be photosynthetic autotrophs, photosynthetic symbionts or colourless heterotrophs. Sexual reproduction if present is of isogamous type. D. Thallus organization. Ceramiales e.g., Delesseria, Phycodrys etc. Lee algae can be classified into 4 groups. (Out of about 4,000 species, about 200 species are of fresh water). In addition, other pigments like c-phycocyanin, chloro­phyll a, d, carotene and xanthophylls are also present. His classification was based on such criteria as pigmentation, types of flagella, assimilatory products, thallus structure and methods of reproduction. Division. 3 0 obj 2. Flagella inserted in the cell perpendi­cular to one another. 6. Prymnesiophyta (haptophytes): haptonema, chlorophyll a, c1 and c2, fuco- xanthin; two whiplash flagella; scales com­mon outside cell; storage product chryso­laminarin is found in vesicles in cytoplasm. 3. 5. Flagella roots consist of 4 cruciately arranged microtubular roots and some­times a rhizoplast. Eukaryotic algae with chloroplast sur­rounded only by the two membranes of the chloroplast envelope. (b) Chloro­plast surrounded by one membrane of chloro­plast endoplasmic reticulum (E.R.) 4. 5. e.g., Harveyella, Ceratocolax etc. 8. In addition, other pig­ments like chlorophyll a, β-carotene and c-phycoerythrin are also present. In telophase, the interzonal spindle col­lapses; phycoplast produces the new cross wall in cell division. Zygote undergoes a dormant period; meiosis occurs when the zygote germi­nates. h. Reproduction. Presence of chlorophyll a and phycobiliprotein, e.g., Anabaena, Gloeotrichia etc. e.g., Tetraspora, Palmella. Members of this group have endosymbi­otic cyanobacteria (cyanelles) in the cytoplasm instead of chloroplast. 2. 5. Sporochnales e.g., Carpomitra, Sporochnus. %PDF-1.5 e. The reserve food is cyanophycean starch and cyanophycean granule (pro­tein). Pennales e.g., Pinnularia, Denticula. Porphyridiales. Common genera: Cyclotella, Biddulphia, Rutilaria etc. Division. ppt classification of algae powerpoint presentations and. 2. b. Batrachospermales. Motile cells asymmetrical, two flagella are attached in a lateral position of the cell. o the presence or absence of flagella (as well as the number and Raphidophyta (chloromonads): chlorophyll a and c; anterior tinsel flagellum and posterior whiplash flagellum. Algae are photosynthetic organisms belonging to the kingdom Protista. 2. Basically unicel­lular algae. Division. e. Most members are unicellular and motile with two flagella. Bold and Wynne’s Classification (1985) 5. 2. Division. Presence of unilocular and plurilocular sporangia, chlorophylls a, c1 and c2, fucoxanthin; storage product chryso­laminarin found in vesicles in cyto­plasm; presence of anterior tinsel flagel­lum and posterior whiplash flagellum. Near- radial external symmetry called sea weeds, grow in various depth Industrial Microbiology, is! ) was the first who proposed a most comprehensive and authorative classification of algae by... But some are found in marine and soil habitats Trachelo- monas, Phacus etc... 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