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Published byHollie Ferguson Modified over 9 years ago
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Ch. 21
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What are fungi? ◦ Eukaryotic heterotrophs that have cell walls made of chitin. Yeasts, molds and mushrooms
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◦ Unlike animals, fungi utilize external digestion. ◦ They come in many shapes and sizes. ◦ They can store lots of water. ◦ Some are parasitic and cause disease. ◦ Some have symbiotic relationships. ◦ Some are delicious! They are important decomposers!
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Except for yeasts, fungi are made of thin filaments called hyphae.
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A mass of tangled hyphae is called a mycelium. ◦ Most of the mycelium is underground. ◦ The mycelial mat secretes digestive enzymes, and absorbs the end products of digestion.
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Fungi can reproduce both sexually and asexually. ◦ The visible part of a fungus above ground is the fruiting body. Fungi spread by producing spores in the fruiting body. Mold spores can cause respiratory illness.
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