honbio_protists&fungi

honbio_protists&fungi - Honors Biology Ch. 26, 27...

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Unformatted text preview: Honors Biology Ch. 26, 27 & 28 Protozoa, Algae and Fungus-like Protists and Fungi Kingdom Protista a.k.a. Kingdom of Misfits or Miscellenea Protists can be animal-like, plant-like or fungal- like, however, nothing is protist-like Most are unicellular (except e.g. seaweed) Some are colonial e.g. Volvox Evolved from Endosymbiosis (recall bacteria) All are eukaryotic. Meaning, they have: a) Membrane-bound organelles (including nuclei) b) Mitochondria and chloroplasts (some) 1. According to this phylogenetic tree, are brown algae more closely related to ciliates or to red algae? Explain. Ciliates; brown algae are part of a group that branches off separately from the group that includes red algae. 2. Why are bacteria not included with any of the microorganism groups in this phylogenetic tree? Bacteria are not eukaryotes. Protozoa are Single-Celled microscopic Eukaryotic organisms that are noted for their ability to Move Independently. 65,000 species, half which are extinct species from fossils. In many different environments; they can drift in the ocean, creep across vegetation in fresh water rivers and ponds, crawl in deep soil, and even reproduce in the bodies of other organis Most Protozoa are heterotrophic, obtaining their nutrients by ingesting small molecules or cells. These particles are usually broken down in food vacuoles, membrane-bound chambers that contain Digestive Enzyme Many species are free-living, while others are Parasites. Free-living live in any habitat where water/moisture is available at some time during the year. Many species make up Zooplankton, a population of organisms that constitutes one of the primary sources of energy in Aquatic Ecosystems. They are the beginning of the Food Chain. Some Free-Living Protozoa live in the soil. Parasitic Protozoa usually have Complex Life Cycles that take place in the cells, tissues and bloodstream of their Host. Several species cause serious human diseases, including Malaria, Amebic Dysentery and Giardiasis. REPRODUCTION All Protozoa can reproduce asexually, During binary fission, a protozoan divides into TWO Identical Individuals....
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honbio_protists&fungi - Honors Biology Ch. 26, 27...

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