Chapter 31

Chapter 31 - Chapter 31 Fungi February 22, 2008 1) Fungi...

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Chapter 31 Fungi – February 22, 2008 1) Fungi are heterotrophs that feed by absorbtion 2) Fungi Nutrition and Lifestyles a) Fungi are heterotrophs, but do not ingest their food i) Secrete exoenzymes into their surroundings that break down complex molecules ii) Absorb smaller organic molecules b) Fungi exhibit diverse lifestyles i) Decomposers, aka saprotrophs ii) Parasites iii)Mutualistic symbionts 3) Body Structure a) The morphology of multicellular fungi enhances absorption of nutrients b) Fungi consist of hyphae that are grouped together into mycelia c) Most fungi have cell walls made of chitin d) Some fungi have hyphae divided into cells by septa, with pores allowing cell-to-cell movement of materials e) Coenocytic fungi lack septa 4) Specialized Hyphae a) Some fungi have hyphae that allow them to capture animals and penetrate tissues of their host b) Mycorrihzae are mutualists between fungi and plant host i) Ectomycorrhizae – surrounds root cells
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ii) Endomycorrhizae – extends hyphae through root-cell wall 5) Fungi produce spores through sexual or asexual life cycles 6) Sexual Reproduction
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This note was uploaded on 02/04/2009 for the course BIOL 1202 taught by Professor Gregg during the Spring '08 term at LSU.

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Chapter 31 - Chapter 31 Fungi February 22, 2008 1) Fungi...

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