Ch 31 - Chapter 31 Fungi Understand structure and nutrition...

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Chapter 31 Fungi Understand structure and nutrition of fungi Know a homology and an example of each of the five major groups (phyla) of fungi Know what molds, yeast and lichens are and what they do Know at least two examples of both beneficial and deleterious fungi Nutrition and Structure 0. Heterotrophs that use exoenzymes to digest tissue externally 1. Saprobes or plant pathogens 2. Hyphae are individual filaments 0. may have septa or be coenocytic 1. haustoria are parasitc hyphae 0. Mycelium is mat of rapidly growing hyphae 3. Fruiting bodies produce spores Figure 31.2 Fig. 31.3 Fig. 31.4 Structure and reproduction 0. Cell walls of chitin 1. Mostly haploid life cycle, but parents can fuse nuclei to form diploid zygote (Fig. 31.5) 2. Both asexual and sexual stages 3. Both fusion of tissue (plasmogamy) and nuclei (Karyogamy) Figure 31.5 Fungal Diversity o 100,000 – 1.5 million spp. In four phyla 1) Chytrids are most primitive retain flagella on spores have coenocytic hyphae,
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Ch 31 - Chapter 31 Fungi Understand structure and nutrition...

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