GENERAL CONCEPTS - o In the reproductive phase fungi may...

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GENERAL CONCEPTS: The fungi represent a diverse, heterogeneous group of eukaryotes. Most of these organisms are plant pathogens and relatively few cause disease in humans. In nature, fungi generally grow by secreting enzymes that digest tissues but some are actually predacious. The growth of the fungi generally involves two phases; vegetative and reproductive. o In the vegetative phase, the cells are haploid and divide mitotically. Most fungi exist as molds with hyphae but some fungi exist as unicellular yeast cells. Some fungi can change their morphology and are termed dimorphic. For example, Candida is found in the yeast form at 37°C but changes to the mold form at 25°C.
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Unformatted text preview: o In the reproductive phase, fungi may undergo either asexual or sexual reproduction. Asexual reproduction involves the generation of spores; sexual reproduction requires specific cellular structures that are used for taxonomic differentiation. • The fungi are classified based on the characteristics of their sexual phase. For the kingdom Fungi, there are two phyla; Zygomycota and Dikaryomycota. The phylum Dikaryomycota is further divided into two subphyla; Ascomycotina and Basidiomycotina. A third group of the fungi for which a sexual phase has not been observed is termed Deuteromycotina. The table outlines this classification and gives representatives of each....
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This note was uploaded on 11/05/2011 for the course BIOLOGY MCB2010 taught by Professor Jessicadigirolamo during the Fall '10 term at Broward College.

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