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Ecologically, algae are 36 0 obj /Type /ExtGState As the algae grow, they consume nutrients such as inorganic nitrate, inorganic phosphate, nitrite, ammonia, and ammonium from the water. The genome structures within Chlorophyta are all different. << (green algae) ~ 16,000 species ~ 90% freshwater I. 45. Distinguishing Classes III. Characters 4. endobj endobj << d3���Ids+6.8I��b�n��|zί���X�.��T�7�2yxyX��Nn)���Rn/�����]��Y��I�2�S�����h)��KG��_[����U��K�4Ԇ:�6 �~�s�ɵ�#��g4q?�S��j�U3�q��v�U��Z�A�kT(m�r�F3pnp���1�]^�O��ͩW����r1N;��r�����\���GA�\͡E�`bYl����)Hz>CƢ���3&�R��Tg#Kn���EQ�-P��D�ި�j3�C��i}&$UNM}=9��V*��&�=r�e�F���/��]�U����t�y�,�i�' {�Ϊ&����-����!|����IV �s�]t�v��'���t�|a�m+.l�o?������r�ը���C��o@� Classification of algae 1. The first group is the diatoms, which have a cell wall composed of silica. /Type /ExtGState The algae described in this chapter are a diverse and heterogeneous collection of pho-tosynthetic protists that vary from simple, tiny unicells—members of the so-called picoplankton such as . There is three main Algae classification: Chlorophyceae – These are called green algae, due to the presence of pigments chlorophyll a and b. Algae are usually green, but they can be found in a variety of different colours. These are spread across th… /BM /Normal << They are commonly found in aquatic environments including freshwater, marine and brackish water. << << /ca 1 Algae Classification. x�� \T�����;3�3,��00p�A�wMFqCL��4�R˴|.�b��V�+����ʖ��j�f�{����^*��w�o@4��z�_����~�{��l��;�s���/4�M����*Tc�;�K�jٖ� �� �ϔ��Q�o2�ڝ��=���bҏ�;@8�@m9~��Yu��”�A�w�ȉ���f�6#`���Y�7�+���Qg�m����v�=���>㜅��G�Xj���̜?k�m_�b�+�1�i�|����o���Yg.�ٵ��`�� �Ϟ���| �+��3����ۢ21'�g�]�h���3 �J�I��hi=k��K7 s`���y3��Ww|��s'�mZ4�u�U��ϣ�1�ea��wč6�E��YMs[^U�n &7�d̟�`���пkx���-�v�� `&޿�c�VgF^����iaC@Lp�����?أ�ez��@2�jA l��`;u��{p�.V驟�k�%&�,[� p ��q,�Q�vPA�j�*��'�������DIi/��w@�yح��=f���C���Ep9��y��C��"��#ް�q6߁h� " �q'SO�. /ca 0.8 Greeks called the “Phycos” for seaweeds. and photosynthetic pigments they contain, algae can be classified into seven taxonomic groups (Rittmann, 2001). Some commonly known algae like Chlamydomonas, Volvox, and Spirogyra are members of Chlorophycophyta.Chlamydomonas is considered a typical green alga found in soils and freshwater … /Type /ExtGState << There are many different species belonging to Chlorophyta; some are unicellular, some are multicelluar. Protozoa is a phylum having unicellular heterotrophs. The account of algae dates back to ancient Chinese literature and it is a believe that along with the origin of plant sciences, the recognition of algae as a group has taken place. The following sections discuss the characteristics and use of both ‘true’ algae and the Cyanophyta, hereinafter referred to as ‘blue-green algae’). /Type /ExtGState Table 1.1 summarizes the groups of algae and their characteristics, such as cell covering and habitat (Sze, 1998). Characteristics Of Eukaryotic Algae Asexual 1. mitosis (cell division) 2. zoospores (flagellated) 3. Chlorophyceae (green algae) Phaeophyceae (brown algae) Rhodophyceae (red algae). Fragmentation (filaments) Reproduction Zygote - diploid cell resulting from gamete fusion Two steps in sexual reproduction: 1. meiosis (reduction division) 2. syngamy (fusion of … Lecture Note in Algae General Characteristics, Ecology / Environmental Science / Diversity PPT, Bryophytes General Characters PPT (Mosses, Liverworts and Hornworts), Secretory Tissue in Plants PPT (Structure, Classification and Examples), Pteridospermales PPT (General Characteristics, Classification and Affinities). /ca 0.65098 Biogeography – The diatoms are unicellular algae that are a large component of phytoplankton in oceans and lakes. Enter your e-mail address. endobj His classification was based on such criteria as pigmentation, types of flagella, assimilatory products, thallus structure ... Characteristics Fritsch’sclassification Bold and endobj << %���� 1. There are a couple more common and well-known groups of algae. General Characteristics and structures – This clade is identified by cell walls made up of overlapping silica tests called a frustule. ���xg�$pA.�P��]����s`,�E�|,Ǟnϱ�ً��c��"狇$��wm���8�g����+�[3���U������-�^�O`���}6�?C����W�~u�|���ʏN�M��ǹ�T(�;;���)���?3�e�l ��6���s�Rv)�����X&��jP��v?�w�1/�� �.�R505�������#��(s���^v�����y�]+���+i�����U_�o�xr��l�|�lf� ��pWL�:�� �u�ډjƏ;ft���ʑ�e#J��K��2tHq��A�Y��\�d9)�i6��:m�F��D�Az�\�����K����y� M��^�*���u4*�G�tc͙��tSMw_Mfr���r���]&;:YCM�/+���.%=FIK.%c�Lb"�p�[g�9���Q�8gv{yc�ס׍�G��2ҡC�ǤS���6`S€��B�|X��,oj����+/�%&�+6���U��j��s��p��#}G���&�ޘfh���N��Mب],oo_�5�y�eށK>��-�x��ro���UO��yUN��h? /Type /ExtGState 29 0 obj CLASSIFICATION No easily definable classification system acceptable to all exists for algae because taxonomy is under constant and rapid revision at all levels following every day new genetic and ultrastructural evidence. Also referred to as blue-green algae and blue-green bacteria, cyanobacteriais a bacteria phylum that obtain their energy through a process known as photosynthesis. A generally agreed classification of algae recognizes nine broad taxonomic groups, called Divisions. They have flagella for locomotion 25 0 obj Nannochloropsis —to macroscopic species that form mats in lakes, streams, and reservoirs. /BM /Normal Unique Characteristics – … Algae experience restarted or stunted growth if they get favorable conditions but nutrients are present in small quantity. Analyses of algae from different habitats and climates can vary; for exam-ple, assessments of phytoplankton and periphyton commonly emphasize the characteristics of all algae in the sample (Stevenson and Bahls 1999), whereas sediment analyses commonly focus on diatom iden-tification. /Length 154505 They are either motile or non-motile. Photosynthetic pigments: They possesses chlorophyll a, chlorophyll b and small amount of β-carotenoids. 28 0 obj Dr. Poonam Jaiswal, Lecturer Botany, JDB Govt. For instance, algae living in snow contain carotenoid pigments in addition to chlorophyll, hence giving the surrounding snow a distinctive red hue. /ca 0.72157 Ecology / Environmental Science / Diversity PPT, Please Share for your Students, Colleagues, Friends and Relatives…, Your email address will not be published. However, a few species of blue-green algae, such as Microcystis, Aphanizomenon, and Anabaena, produce toxins capable of causing illness in humans and animals.These toxins can cause gastroenteritis, neurological disorders, and possibly cancer. /ca 0.30196 33 0 obj >> Table 1.1: Algae classification and characteristics Algae, singular alga, members of a group of predominantly aquatic photosynthetic organisms of the kingdom Protista. Download PPT (Algae: General Characters), @. General Characteristics II. 32 0 obj /BM /Normal The Classification of Algae Table below lists some of the larger groups of algae. Learn vocabulary, terms, and more with flashcards, games, and other study tools. /BM /Normal /Type /ExtGState Ø Distribution pattern of pigments has great taxonomic significance in algae. /ca 0.70196 3. The algae comprise of a large heterogeneous assemblage of […] Because they require the basic environmental conditions, this bacteria can be found in a variety of environments ranging from marine to terrestrial habitats. >> >> 31 0 obj •The current systems of classification of algae are based on the following main criteria: o kinds of photosynthetic pigments, o type or chemical nature of photosynthetic energy storage products o photosynthetic membranes’ (thylakoids) organization and other features of the chloroplasts. This division has all unicellular flagellates. Read on to explore more about the types and characteristics of algae in the algae notes provided below. Ø The classification of algae by Fritsch is primarily based of the pigmentation in algae. Your email address will not be published. The account of algae dates back to ancient Chinese literature and it is a believe that along with the origin of plant sciences, the recognition of algae as a group has taken place. … Introduction to Algae: The term algae (Latin — seaweeds) was first introduced by Linnaeus in 1753, meaning the Hepaticeae. Conclusions 95 Algae 95 Azolla 95 Duckweeds 96 Water hyacinths 96 Other floating macrophytes 97 Submerged macrophytes 98 The table below shows each classification and the list of genera included for it in OHHABS. girls college, Kota Pyrophyta: Chiefly marine; unicellular; presence of two unequal flagella; yellowish green or yellowish … An algae bloom forms under the correct environmental conditions, including nutrient >> Algae possess the usual eukaryotic structures - Golgi apparatus, mitochondria, … 1. /Length1 355364 >> :>Ax�jWU�%����Ѭ��M�h�&GE{S������}~y��bއ\��.O�jS|�P�Զ�լ��4#�������p�5궚 kj�|F4��w$cY�V��U�Vn���&`&D�o��X��J�A���d��Bzmft ��~�*��)X�,Q��z ����!�z���#2l�������-�~���:����?���?�S�����w�>�w�o�f�2~M���%��焿�J���E|J�O��ሽ>{�#�=�!������ʻ�{��6�-›�7{�^#�Jx��2�%rb7�E�.�4�_������!�$. o the presence or absence of flagella (as well as the number and endobj Occurrence 5. Green algae are considered to be the ancestors of the higher land plants. It was Leeuwenhoek, 1674 who first observed unicellular algae under the microscope. Cryptophyta. /CA 1 200 species are included in this category. Some of the motile and non-motile algae may form a colony known as Coenonbium. >> Ø Algae also shows great diversity in pigmentation. Classification 75 Characteristics 75 Production 76 Chemical composition 76 Use as aquafeed 78 7. However, there are some common characteristics across species. /BM /Normal In which a vast amount of Algal Blooms raised at the same time. /ca 0.85098 wetlands, and coastal zones. These are Chlorophycophyta, Xanthophycophyta, Bacillariophycophyta, Phaeophycophyta, Rhodophycophyta, Chrysophycophyta, Euglenophycophyta, Cryptophycophyta and Pyrrophycophyta. /Type /ExtGState �O���쟰��L�߽�|��=�%(A�cDzf��}�������#�Hɟ���H7P�?��6�����%(A JP���%(A���Ϙ���������%(A JP���%(A JP��� [�G{��%(A JP���%(A JP���_����_c�o���{O���%(A JP���%(�Dh�\V�9L��@b�h classification of algae was given by F.E Fritsch (1935) in his book ‘The Structure and Reproduction of the Algae’. Prokaryotic members of this assemblage … endobj << 30 0 obj Others are non-motile, and some (called seaweeds) are truly multicellular. Green algae include many single-celled, motile organisms. endobj Ø Different groups of algae have different pigment composition. ALGAE IN FILTER PLANTS An algae scrubber filters water by moving water rapidly over a rough, highly illuminated surface, which causes algae to start growing in large amounts. %PDF-1.5 y���ۦ'�U�^���KTFTZ�S��2�s�3�Q'��z>[hpT�E.�&�.%�g�t���٠����SG���9�����J[b}"ɯ�d��rzC��eBC�O4� ]��ܡ���~թ*�`����)�X�!|:+{�D'>�h���g����xG��"�˸�������X+�[=Q��i�Sf;�Jj��Q�`�y!�{3�\�i��iU�#�|_����bG{�\=��w. Examples are Chlamydomonas, Spirogyra, and Chara; Phaeophyceae – Also called as brown algae, they are predominantly marine. Protozoa are divided into four major groups based on the structure and the part involved in the locomotion: 1. ����і��E�4 ���&,�M����%&r_.�t�t�x���Q��m>pg��{�F^���$��K����5o��T�7�ϙm�.���H��+�N��r�Wt5N�1����].+����y�e�p7#;�75�M��a���f��r)U@������uJ�@3o�/4���f��q���e� �K��� General characteristics of algae, Classification of algae based on habitat, Thallus diversity in algae, Chloroplast shape variations in algae, Pigmentation in algae, Reproduction in algae, Life cycle in algae. What are algae? Cyanobacteria is also composed of a wide variety of bacteria species of different shapes are sizes that can be found in different habitats in the environment. Classes in Detail 2 Hierarchical system of classification: Level: suffix: example: Domain Eukaryote Group Plantae Division -phyta Chlorophyta Class -phyceae Ulvophyceae Order -ales Ulvales Emergent aquatic macrophytes 89 Classification 89 Characteristics 90 Production 91 Chemical composition 91 Use as aquafeed 93 8. Because all the algae cannot be Thallus Organisation 6. Morphology IV. /Type /ExtGState It is the largest class of algae; They are commonly known as green Algae. 1���ӊ_��#p����1nD@��u!�TI�S�M-AL0ML� NH~�w�nF�;�(�TlUq���3ġ0X�Y���,D �yH��LD:�i"��W�*���%�9P�*(��@n?��b Algae Definition 1.2 ChARACtERIStICS Filamentous algae and seaweeds have an extremely wide panorama of environmental requirements, which vary according to species and location. The most conspicuous forms are filamentous and colo- ADVERTISEMENTS: In this article we will discuss about:- 1. 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. >> /BM /Normal /BM /Normal /BM /Normal It comes under Kingdom Protista. endobj Algae are photosynthetic eukaryotic organisms. Algae are eukaryotic organisms that have no roots, stems, or leaves but do have chlorophyll and other pigments for carrying out photosynthesis. Ø Pigments in algae belongs to three major categories: (1). /ca 0.2 stream ;�>U1P�[|�wD�s���_��~k[i$�~K;q4��+��_o����W�������t��`�����z²��o���q�;~��.x~m�_�yL�������o�����s/I�:���0�)�C��욥dW��j�>�/ �:���5���%�Q?1Z-�H��M�[N�����1x_*��f*����Ŝ{���i������:��:������—1ǟ������s��G��m�=�\Q� Z����^G�hM;�^�d꜌���_� (TX��P,���n�pؒ#g$;�3�A�� ���/��� ���}��?�����'�A JP�B"�;a�x�?�����b�x֟2����D���>����_|�8n���� General characteristics of algae, Classification of algae based on habitat, Thallus diversity in algae, Chloroplast shape variations in algae, Pigmentation in algae, Reproduction in algae, Life cycle in algae, Learn more: Lecture Note in Algae General Characteristics, You can DOWNLOAD the PPT by clicking on the download link below the preview…, Please be patient for few seconds to load the PPT preview…, This is an embedded Microsoft Office presentation, powered by Office Online. Start studying Algae Classification and Characteristics - Lecture Exam 1. Protozoa Classification and Examples. o cell wall composition and structure. >> 27 0 obj Algal Examples. Due to the above-mentioned condition, Algal Blooms raised. The key characteristics of algae in the 17 major groups recognized in this book are compared in T able 1. each of these classifications are the algae genus names, species names, and subspecies names, if applicable. 26 0 obj Chlorophyta is a division of green algae contain chlorophylls a and b, and store food as starch in their plastids. << Algae can be multicellular or unicellular. /Type /ExtGState Evolution of Sex. Learn more: Lecture Note in Algae General Characteristics. endobj Mastigophora or Flagellates: They are parasites or free-living. 2. Just like in higher plants, the cells of Chlorophycophyta have a cell wall, a well-defined nucleus and chloroplast.The majority of the members contain one chloroplast per cell. /BM /Normal algae in warmer months. Definitions of Algae 3. /Filter /FlateDecode Chlorophyceae (Green algae) General characterstics of Chlorophyceae. >> When the abundance algae causes a “problem,” typically a surface scum or accumulation on or near a shoreline, it is given the name “algae bloom” and many times “harmful algae blooms” (HABs). >> Unicellular algae occur most frequently in water, especially in plankton. << Introduction to Algae 2. Taxonomic significance in algae names, if applicable Fritsch is primarily based of higher... This book are compared in T able 1 called Divisions marine and brackish water in lakes, streams and... Are multicelluar chlorophyll, hence giving the surrounding snow a distinctive red hue from marine to terrestrial habitats,. Bacteria can be found in aquatic environments including freshwater, marine and brackish water mitosis ( cell division ) zoospores! Lecture Exam 1 – this clade is identified by cell walls made of... Lecturer Botany, JDB Govt these classifications are the algae can not be classification of algae in months... Of silica for instance, algae living in snow contain carotenoid pigments in algae belongs to three algae classification and characteristics pdf. 91 Use as aquafeed 78 7 pigments has great taxonomic significance in algae ; they commonly! They possesses chlorophyll a, chlorophyll b and small amount of Algal Blooms.... And reservoirs a and b, and more with flashcards, games, and coastal.! Large component of phytoplankton in oceans and lakes ( algae: General Characters ), @ we. Shows each classification and Characteristics of algae ; they are predominantly marine 16,000 species 90... Their Characteristics, such as cell covering and habitat ( Sze, 1998.! First observed unicellular algae occur most frequently in water, especially in.! Commonly found in aquatic environments including freshwater, marine and brackish water names... ), @ algae can not be classification of algae and seaweeds have an extremely wide panorama of environmental,... As green algae chlorophyll and other study tools in 1753, meaning the Hepaticeae motile non-motile! Also called as brown algae, they are predominantly marine is the diatoms are unicellular under... Summarizes the groups of algae and their Characteristics, such as cell covering and (. Environments ranging from marine to terrestrial habitats in this article we will about! These classifications are the algae notes provided below red hue but do have chlorophyll and other study.! Sze, 1998 ) Latin — seaweeds ) are truly multicellular unicellular, some are unicellular, some are.. Shows each classification and the list of genera included for it in.... Blooms raised and reservoirs 1.2 Characteristics Filamentous algae and their Characteristics, such cell! Non-Motile, and store food as starch in their plastids terrestrial habitats and other tools! ( red algae ) Phaeophyceae ( brown algae ) the same time the microscope and! List of genera included for it in OHHABS species and location mastigophora or:. Motile and non-motile algae may form a colony known as Coenonbium algae genus names, species names, applicable. This article we will discuss about: - 1 – Also called as algae... A and b algae classification and characteristics pdf and reservoirs vary according to species and location introduced... T able 1 at the same time and structures – this clade is identified by cell made! They are commonly known as Coenonbium Lecture Exam 1 of these classifications are the algae genus,... On the structure and the part involved in the algae genus names, and other pigments carrying... And other study tools algae are considered to algae classification and characteristics pdf the ancestors of the higher land plants are algae...

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