PPT-Algae

kelp forest Algae Kingdom Protista Eukaryotic with chloroplasts autotrophic some are unicellular Multicellular algae are popularly called seaweeds not plants No leaves stems roots or flowers. Algae Algae have been used in animal and human diets since very early times Filamentous algae are usually considered as macrophytes since they often form floating masses that can be easily harvested although many c By Mark . Zhou and . Asad. . Zaheer. Structure. May live in colonies. Store energy as starch. Stacked thylakoids. Cell walls made of cellulose. Most have flagella. Red color from . phycoerythrin. . . Ponds can be fragile habitats where small amounts of pollution can have significant effects on the life in,. on and around them. . Nitrogen and Phosphorus based fertilisers (which make plants grow better) are washed out of and off soils from farms, causing rapid algal growth.. Al-Shaeri, M. A. M.. 1,2. . Paterson, L.. 3. . Stobie. , . M. 1. . Cyphus. , P.. 1. Hartl, M. G. J.. 1. *. 1. Heriot-Watt University, Centre for Marine Biodiversity & Biotechnology, School of Life Sciences, . Photo Courtesy Ami . Ben-Amotz . John J Milledge. Fossil Fuel Costs are Increasing. BP . statistical review of world . energy June 2012. Demand for Fossil Fuel is Increasing. BP . statistical review of world . SEAWEEDS. . An Overview. Phycology. The study of Algae. Also called . Algology. Not a plant - lack the structural complexity of higher plants . They DO photosynthesize. Characteristics. Range in size from . All are free-floating. All capture light energy by oxygenic photosynthesis . All use a suite of photosynthetic pigments that includes Chlorophyll a.. Major Groups of Freshwater . Phytoplankters. Blue-Green Algae- . classifiction. system whish was suggested by . Ropert. . wittaker. in 1969. the 5 kingdoms were ( . monera. , . protista. , plants ,animals ,fungi) . So algae included in . kingdome. . monera. . . General Characteristics of Algae. Algae are simplest eukaryotic organisms, may be unicellular or . multicellular. .. Plant Body: . Thalloid. , not differentiated into root, stem and leaves.. Nutrition: . ) is a plant-like organism that uses sunlight to produce energy in a process called . photosynthesis. . Algae are extremely important organisms because they are considered to be the primary oxygen-producing organisms on Earth. all. . shapes . and sizes. . Algae . are not plants, even though they sometimes look . like. . them. . . They . are all referred to as algae, the . red. , green and brown . algae. . are . In addition to above mentioned some algae also occur in uncommon habitat and termed as:. Halophytic algae. . They grow in the highly concentrated salt lakes.. Symbiotic algae. . They grow in association with fungi, bryophytes, gymnosperms or angiosperms. . Structure of the algal cell. There are two basic types of cells in the algae, . prokaryotic . and . eukaryotic. . Prokaryotic cells lack membrane-bounded organelles (plastids, mitochondria, nuclei, Golgi bodies, and flagella) and occur in the cyanobacteria (Fig.1).. chlorophyllus. . thallophytes. that can manufacture their own food and they produce oxygen during photosynthesis. So they are called as autotrophic . thallophytes. .. The term . thallus. is used for plant body that is not differentiated into root, stem and leaves. Lacks vascular system..