D.Fungi - Fungi Fungi Kingdom: Fungi Eukaryotic...

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Fungi Heyer 1 Fungi Fungi • Eukaryotic • Multicellular (most) with limited differentiation • Chitinous cell walls • ~100,000 named species ß ~ a third with unclear taxonomy • Heterotrophic with external digestion • Haploid life history Kingdom: Fungi Fungal mycelium (body) is comprised of many hyphae (tubular filaments) Kingdom: Fungi Fig. 31.2 Hyphae are septate or coenocytic Kingdom: Fungi Heterotrophic Absorb nutrients from environment Secrete exoenzymes for external digestion Most are saprobic Major decomposers Many are parasitic Many are mutualistic symbionts Some are predatory ! Kingdom: Fungi Hyphae penetrate soil or decaying tissues Erect sporangia to disperse spores Saprobic Fungi Penicillium
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Fungi Heyer 2 Present in many symbiotic (incl. parasitic) species Specialized branches off of hyphae Note: penetrate cell wall, but not plasma membrane Symbiotic Fungi Hyphae specialized into adhesive nets or constricting slip-rings Prey are nematodes (soil round worms)
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D.Fungi - Fungi Fungi Kingdom: Fungi Eukaryotic...

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