Microbiology Lab 7: Introduction to Algae & Protozoa PDF
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University of Jeddah
2014
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Summary
This document is a presentation on the topic of algae, with a particular focus on different types of algae. The presentation also provides introduction to protozoa. The presentation also briefly describes some organisms such as Chlamydomonas, Spirogyra to be studied in the lab.
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قسم علوم االحياء- كلية العلوم Faculty of Sciences - Department of Biological Sciences Microbiology Lab Lab 7 Introduction to Algae & Protozoa Introduction to Algae Algae are usually photosynthetic and aquatic, but do...
قسم علوم االحياء- كلية العلوم Faculty of Sciences - Department of Biological Sciences Microbiology Lab Lab 7 Introduction to Algae & Protozoa Introduction to Algae Algae are usually photosynthetic and aquatic, but do not have true roots, stems, leaves, vascular tissue and have simple reproductive structures. They are distributed worldwide in the sea, in freshwater and in wastewater. Most are microscopic, but some are quite large, e.g., some marine seaweeds that can exceed 50 m in length. The study of Algae is called Phycology. Algae body called Thallus. Algae can be divided depending on the structure type: Unicellular Colonial Filamentous algae algae alga Chlamydomonas Volvox Spirogyra Chlamydomonas Volvox http://jcoll.org/genoma/vida_microsubmarina/microalgas/img/spirogyra/spirogyra.jpg Spirogyra Algae can be divided depending on the structure type: (Cont.) coenocytic Membranous Parenchymatous algae algae algae Vaucheria Ulva Sargassum Vaucheria Ulva Sargassum Introduction to Protozoa Protozoa (proto – primitive; zoa – animal) are free-living organisms that inhabit water and soil. Some lives in association with other organisms as parasites. The study of Protozoa is called Protozoology. Characteristics of Protozoa are: Eukaryotic Single-celled (unicellular) No cell wall Motility (nearly all are able to move due to cilia, flagella, pseudopodia). Motile feeding stage called trophozoite and many have hardy resting stage called cyst. Some organisms to be studied in lab: Amoeba Sp.: Amorphous structure changing shape due to formation of pseudopodia. Euglena Sp.: Elongated shape. Flagella protruding out of one end. Green due to presence of chloroplast.. Paramecium Sp.: Slipper shaped cell Many cilia distributed over the entire surface of the organism. Recommended: Chlamydomonas Euglena https://youtu.be/cFfiCzKV9-k https://youtu.be/9nxoSRasq2Q Volvox Spirogyra https://youtu.be/TsDAiU8EBLI https://youtu.be/kz6Ctbq-elo Amoeba https://youtu.be/vlUjBOpdSI0 Amoeba eats paramecia https://youtu.be/mv6Ehv06mXY Paramecium https://youtu.be/dwU0ndUgqhQ Thank You
