Ch.31 - Ch.31-Fungi Friday, February 20, 2009 1:39 PM 1. 1....

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Ch.31-Fungi Friday, February 20, 2009 1:39 PM Lecture Topic: CLICKER QUESTION : THREE OF THE FOUR ANSWERS BELOW ARE SEED PRODUCERS. WHICH IS NOT? 1. FERNS 2. CONIFERS 3. EUDICOTS 4. GINKGOS 5. Concept 31.1: Fungi are heterotrophs that feed by absorption 6. Fungal 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 1. Aka. Saprotrophs ii. Parasites iii. Mutualists symbionts 7. 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 cells walls made of chitin d. Fig. 31.2 e. Some fungi have hyphae divided into cells by septa, with pores allowing cell-to-cell movement of materials f. Coenocytic fungi lack septa g. Fig. 31.3 8. Specialized Hyphae a. Some fungi have hyphae that allow them to capture animals and penetrate the tissues of their hosts b. Mychorrhizae are mutualisms between fungi and plant host i. Ectomycorrhizae 1. Surrounds root cells ii. Endomycorrhizae
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This note was uploaded on 02/28/2009 for the course BIOL 1202 taught by Professor Gregg during the Spring '08 term at LSU.

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Ch.31 - Ch.31-Fungi Friday, February 20, 2009 1:39 PM 1. 1....

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