endobj /ca 0.85098 /Type /ExtGState Examples are Chlamydomonas, Spirogyra, and Chara; Phaeophyceae – Also called as brown algae, they are predominantly marine. 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. His classification was based on such criteria as pigmentation, types of flagella, assimilatory products, thallus structure ... Characteristics Fritsch’sclassification Bold and There is three main Algae classification: Chlorophyceae – These are called green algae, due to the presence of pigments chlorophyll a and b. They are either motile or non-motile. Pyrophyta: Chiefly marine; unicellular; presence of two unequal flagella; yellowish green or yellowish … /BM /Normal /Type /ExtGState Characters 4. Protozoa are divided into four major groups based on the structure and the part involved in the locomotion: 1. 1. 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. wetlands, and coastal zones. General Characteristics and structures – This clade is identified by cell walls made up of overlapping silica tests called a frustule. Table 1.1 summarizes the groups of algae and their characteristics, such as cell covering and habitat (Sze, 1998). o the presence or absence of flagella (as well as the number and 36 0 obj Cryptophyta. 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. Biogeography – The diatoms are unicellular algae that are a large component of phytoplankton in oceans and lakes. Due to the above-mentioned condition, Algal Blooms raised. 32 0 obj 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. /ca 1 As the algae grow, they consume nutrients such as inorganic nitrate, inorganic phosphate, nitrite, ammonia, and ammonium from the water. Some of the motile and non-motile algae may form a colony known as Coenonbium. 1.2 ChARACtERIStICS Filamentous algae and seaweeds have an extremely wide panorama of environmental requirements, which vary according to species and location. stream /ca 0.8 >> /Type /ExtGState It comes under Kingdom Protista. Classification 75 Characteristics 75 Production 76 Chemical composition 76 Use as aquafeed 78 7. �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 endobj It was Leeuwenhoek, 1674 who first observed unicellular algae under the microscope. This division has all unicellular flagellates. 2. Characteristics Of Eukaryotic Algae Asexual 1. mitosis (cell division) 2. zoospores (flagellated) 3. Your email address will not be published. << •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. /Length1 355364 … endobj >> Ø Pigments in algae belongs to three major categories: (1). ���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? The most conspicuous forms are filamentous and colo- 31 0 obj 26 0 obj >> General Characteristics II. What are algae? The following sections discuss the characteristics and use of both ‘true’ algae and the Cyanophyta, hereinafter referred to as ‘blue-green algae’). Chlorophyta is a division of green algae contain chlorophylls a and b, and store food as starch in their plastids. Learn more: Lecture Note in Algae General Characteristics. However, there are some common characteristics across species. /ca 0.2 << /Type /ExtGState Algae can be multicellular or unicellular. /ca 0.70196 << For instance, algae living in snow contain carotenoid pigments in addition to chlorophyll, hence giving the surrounding snow a distinctive red hue. >> There are many different species belonging to Chlorophyta; some are unicellular, some are multicelluar. The genome structures within Chlorophyta are all different. 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. Protozoa Classification and Examples. /BM /Normal ��~�*��)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�_������!�$. Classification of algae 1. endobj (green algae) ~ 16,000 species ~ 90% freshwater I. Prokaryotic members of this assemblage … These are Chlorophycophyta, Xanthophycophyta, Bacillariophycophyta, Phaeophycophyta, Rhodophycophyta, Chrysophycophyta, Euglenophycophyta, Cryptophycophyta and Pyrrophycophyta. 27 0 obj There are a couple more common and well-known groups of algae. Start studying Algae Classification and Characteristics - Lecture Exam 1. Algal Examples. 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