There is three main Algae classification: Chlorophyceae – These are called green algae, due to the presence of pigments chlorophyll a and b. 25 0 obj << The key characteristics of algae in the 17 major groups recognized in this book are compared in T able 1. /ca 0.2 3. Algae are photosynthetic eukaryotic organisms. endobj endobj Cryptophyta. 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. Others are non-motile, and some (called seaweeds) are truly multicellular. They are commonly found in aquatic environments including freshwater, marine and brackish water. /Type /ExtGState The algae comprise of a large heterogeneous assemblage of […] Unicellular algae occur most frequently in water, especially in plankton. 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. 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. 1���ӊ_��#p����1nD@��u!�TI�S�M-AL0ML� NH~�w�nF�;�(�TlUq���3ġ0X�Y���,D �yH��LD:�i"��W�*���%�9P�*(��@n?��b (green algae) ~ 16,000 species ~ 90% freshwater I. ;�>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���� o the presence or absence of flagella (as well as the number and 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. Mastigophora or Flagellates: They are parasites or free-living. /Type /ExtGState >> This division has all unicellular flagellates. They have flagella for locomotion 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). Start studying Algae Classification and Characteristics - Lecture Exam 1. << /ca 0.85098 << 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. General Characteristics II. What are algae? 27 0 obj 36 0 obj Chlorophyceae (green algae) Phaeophyceae (brown algae) Rhodophyceae (red algae). :>Ax�jWU�%����Ѭ��M�h�&GE{S������}~y��bއ\��.O�jS|�P�Զ�լ��4#�������p�5궚 kj�|F4��w$cY�V��U�Vn���&`&D�o��X��J�A���d��Bzmft ��~�*��)X�,Q��z ����!�z���#2l�������-�~���:����?���?�S�����w�>�w�o�f�2~M���%��焿�J���E|J�O��ሽ>{�#�=�!������ʻ�{��6�-›�7{�^#�Jx��2�%rb7�E�.�4�_������!�$. endobj >> 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). 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 . Because all the algae cannot be These are spread across th… Emergent aquatic macrophytes 89 Classification 89 Characteristics 90 Production 91 Chemical composition 91 Use as aquafeed 93 8. << << << As the algae grow, they consume nutrients such as inorganic nitrate, inorganic phosphate, nitrite, ammonia, and ammonium from the water. These are Chlorophycophyta, Xanthophycophyta, Bacillariophycophyta, Phaeophycophyta, Rhodophycophyta, Chrysophycophyta, Euglenophycophyta, Cryptophycophyta and Pyrrophycophyta. /Length 154505 /Type /ExtGState /BM /Normal /Type /ExtGState Due to the above-mentioned condition, Algal Blooms raised. The genome structures within Chlorophyta are all different. /Length1 355364 endobj Occurrence 5. 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. Learn more: Lecture Note in Algae General Characteristics. Evolution of Sex. endobj Read on to explore more about the types and characteristics of algae in the algae notes provided below. classification of algae was given by F.E Fritsch (1935) in his book ‘The Structure and Reproduction of the Algae’. Algae are usually green, but they can be found in a variety of different colours. ���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? 1. Some of the motile and non-motile algae may form a colony known as Coenonbium. Algae can be multicellular or unicellular. 31 0 obj Dr. Poonam Jaiswal, Lecturer Botany, JDB Govt. Chlorophyceae (Green algae) General characterstics of Chlorophyceae. Introduction to Algae: The term algae (Latin — seaweeds) was first introduced by Linnaeus in 1753, meaning the Hepaticeae. Morphology IV. /ca 0.8 Introduction to Algae 2. << >> 33 0 obj There are a couple more common and well-known groups of algae. ADVERTISEMENTS: In this article we will discuss about:- 1. Algal Examples. It comes under Kingdom Protista. Ecologically, algae are Learn vocabulary, terms, and more with flashcards, games, and other study tools. 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. >> General Characteristics and structures – This clade is identified by cell walls made up of overlapping silica tests called a frustule. The table below shows each classification and the list of genera included for it in OHHABS. /ca 0.65098 /Type /ExtGState Characteristics Of Eukaryotic Algae Asexual 1. mitosis (cell division) 2. zoospores (flagellated) 3. Algae Classification. Green algae are considered to be the ancestors of the higher land plants. Ø The classification of algae by Fritsch is primarily based of the pigmentation in algae. /Type /ExtGState Protozoa is a phylum having unicellular heterotrophs. endobj Algae possess the usual eukaryotic structures - Golgi apparatus, mitochondria, … /BM /Normal Table 1.1: Algae classification and characteristics >> Greeks called the “Phycos” for seaweeds. 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. Pyrophyta: Chiefly marine; unicellular; presence of two unequal flagella; yellowish green or yellowish … Green algae include many single-celled, motile organisms. Examples are Chlamydomonas, Spirogyra, and Chara; Phaeophyceae – Also called as brown algae, they are predominantly marine. The first group is the diatoms, which have a cell wall composed of silica. Classification of algae 1. /BM /Normal Ø Algae also shows great diversity in pigmentation. It is the largest class of algae; They are commonly known as green Algae. 29 0 obj The Classification of Algae Table below lists some of the larger groups of algae. %PDF-1.5 Characters 4. Unique Characteristics – … << endobj wetlands, and coastal zones. An algae bloom forms under the correct environmental conditions, including nutrient 26 0 obj Protozoa Classification and Examples. Your email address will not be published. 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