Lab Practical Review

Lab Practical Review - Lab Practical Review Lab #1:...

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Unformatted text preview: Lab Practical Review Lab #1: Protista- unicellular or colonial eukaryotic organisms. Paraphyletic group (taxonomic group which does not include all the descendants of an ancestral taxon). Fungi- absorptive heterotrophs (secretes enzymes externally into its environment to digest organic materials which are then absorbed), saprophytic (obtains nutrition from dead or decaying plant or animal tissue). They lack motile cells and have chitin cell walls. ALMOST all multicellular. Have hyphae (filamentous strands, all hyphae= mycelium).Reproduce by releasing spores, made in sporangium. Important decomposers and nutrient recyclers! o Dikaryons- a hypha with 2 nuclei o Zygomycota= Waits for Meiosis, Basidiomycota- Immediate Meiosis with 4 Cells, Ascomycota= Immediate Meiosis with 8 Cells o Hyphae- secretes enzymes externally into its environment to digest organic materials which are then absorbed Plants- all have alternation of generations. Many live in water. All multicellular photosynthetic land plants enclose their zygotes and early embryos in a protective jacket. Algae have exposed embryos. embryos in a protective jacket....
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This note was uploaded on 04/07/2008 for the course BIO 111 taught by Professor Briggs during the Spring '07 term at Lycoming.

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Lab Practical Review - Lab Practical Review Lab #1:...

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