BIOEE 1780 Chapter Notes - Chapter 22 & 23: Invagination, Diplo, Peritoneum
14 Oct 2016
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Synapomorphies: chitin in the cell wall, absorptive heterotrophy. Cell walls contain chitin, bodies composed of hyphae, perforated by septa that allow passage of organelles mass hyphae called mycelium. Microsporidia: smallest, (intracellular parasites and infect via a polar tube, reduced mitochondria. Chytrids: responsible for deaths of many frogs. Zygomycota: mold that spoils food, but can also ferment soybeans. Glomeromycota: cultured on plants and gives them increased surface area for more nutrients and fungus receives photsynthate. Dikarya: sexual lifestage with 2 unfused nuclei. Ascomycota: largst group, cup fungi, morels, truffles, yeasts, lichens. Basidiomycota: mushrooms, rust and smut, brackets, sexual reproduction produces 4 basidiospores discharged passively. At blastula stage of development, cell forms cavity (diploblastic=2 layers, triploblastic=3 layers, bilateria)---give rise to tissues, organs. *sponges don"t have true tissues or organs, so not considered diplo or triploblastic* Symmetry (radial, bilateral: radially: one can divide animal on any axis, bilateral: single plane that runs from anterior to posterior and produces mirror image.
