Unit 1 Lab Monerans and Protistans

Unit 1 Lab Monerans and Protistans - Principles of Biology...

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Principles of Biology 2 Unit 1 Lab Monera and Protista KINGDOM PROTISTA All members in this group share the unifying characteristics of being eukaryotic . The first six phyla we will observe are generally referred to as the plant - like protistans and are phototrophic . Commonly, the plant-like protistans are called algae and can exist in unicellular or multi- cellular forms. 1. Phylum Pyrrophyta (pye-rof’-fi-tah) Also called dinoflagellates because of their possession of two flagella and cellulose plates comprising the cell wall. Disturbed dinoflagellates sparkle which can be seen at night. They are responsible for “ red tides ” which cause massive fish kills. Click here or go to the following URL to learn more about the impact of red tide. http://www.tpwd.state.tx.us/landwater/water/environconcerns/hab/redtide/faq.phtml Click here or go to the following URL for more information from the CDC. ( http://www.cdc.gov/hab/redtide 2. Phylum Chrysophyta (kriss-ah’-fi-tah) “Golden Algae or diatoms Members of this phylum are beautiful, unicellular works of art when viewed under the microscope. The cell walls of diatoms are comprised of silica (glass) shells. (Empty shells are referred to as “tests”.) Diatoms store oils and may be a source of our undersea oil reserves. Click here or go to the following URL for more information on Chrysophyta. http://www.ucmp.berkeley.edu/chromista/chrysophyta.html 3. Phylum Euglenophyta (you’-glen-ah’fi-tah) Members of this phylum are interesting in that they display both plant - like characteristics (chlorophyll pigments) and animal - like characteristics (heterotrophic & motility via a flagellum). They are often found in freshwater or stagnant, polluted waters. A light - sensitive eyespot allows the euglenoids to find suitable conditions. Click here for more information on Euglenophyta or go to the following URL http://euglena.msu.edu/ 4. Phylum Chlorophyta (klor-ah’-fi-tah) “Green Algae” The most diverse algae and the closest relatives to plants . Members of this phylum may be unicellular or multi-cellular and often form colonies. Nearly all are photosynthetic and can be found in a wide range of habitats. Click here for more information on Chlorophyta or go to the following URL http://www.seaweed.ie/algae/chlorophyta.lasso 5. Phylum Phaeophyta (fay-ah’-fi-tah) The “Brown Algae” Are mainly multi-cellular, marine organisms including the large kelps and seaweeds. A “ holdfast ” adheres the algae to a smooth surface at the bottom of the ocean while the photosynthetic portion floats with the use of air bladders located on the leaf-like blade of the algae.
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Click here for more information on Phaeophyta or go to the following URL http://www.ucmp.berkeley.edu/chromista/phaeophyta.html 6. Phylum Rhodophyta (row-doff’-fi-tah) By possessing certain accessory pigments the “Red Algae” can trap deep penetrating light rays which allows them to exist at great depths. Mucous
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This note was uploaded on 06/15/2009 for the course RBIO RBIO1234 taught by Professor Farnsworth during the Winter '07 term at Kent Uni..

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Unit 1 Lab Monerans and Protistans - Principles of Biology...

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