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Fungi
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Characteristics of Fungi• All fungi are eukaryotic heterotrophs.• They are saprobes – absorbing their food
from decaying matter around them. They release enzymes in the immediate area that breakdown organic material and then it is absorbed using endocytosis.
• The bodies of most fungi are made of threadlike filaments called hyphae.
• As more and more hyphae grow together, they form a mass called a mycelium.
• The cell walls of fungi are made of chitin rather than cellulose.
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Reproduction in Fungi• Fungi reproduce both sexually and asexually by
means of spores – a reproductive cell that can grow into an adult form.
• The adult fungi release spores which drop to the ground and begin to grow the hyphae strands.
• These strands grow and grow and form the mycelium – the mushroom tissue which can go on to form the adult body.
• To gain variation within the population the hyphae from different spores of different parents will fuse together and form an adult with DNA from two parents.
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Fungi Lifecycle
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Fungi Classification• The fungi are classified according to the
structures that carry/produce their spores.• The three phyla/divisions of fungi we will
examine are the:– Caselike Fungi (Division Zygomycota)– Saclike Fungi (Division Ascomycota)– Clublike Fungi (Division Basidiomycota)
• There are also “imperfect” fungi that have no known sexual phases. Many of the imperfect fungi cause disease in plants and animals.
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Interesting Fungi• Penicillium• Trichophyton• Lichens• Bracket Fungus• Mushrooms
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That’s All I Got…