BIOL 112 Chapter Notes - Chapter 29: Glomeromycota, Mycelium, Zygomycota
Document Summary
Opisthokonts: fungi are opisthokonts, along with animals and choanoflagellates, based on chemical and structural characters, derived traits, flagellate cells with single flagellum, plate-like cristae (inner membranes) in mitochondria. Characteristics of fungi: eukaryotic heterotrophs, secrete digestive enzymes onto food then absorb predigested food, cell walls with chitin. Fungal structures: fungi include, unicellular yeasts, filamentous, multicellular molds, most multicellular fungi, have long, threadlike filaments (hyphae, branch and form a tangled mass (mycelium) thallus: term for a simple fungus body form. In most fungi (e. g. ascomycetes and basidiomycetes: perforated septa (cross walls) divide hyphae into individual cells. In some fungi (e. g. zygomycetes and glomeromycetes: hyphae are coenocytic (long multinuclear cell) Most reproduce sexually and asexually by spores: sporangium: structure for spore production, generally produced on aerial hyphae for wind dispersal, germinate into mycelium if landed in suitable spot. Asexual reproduction: among yeasts: budding, among molds: asexual spores produced.
