BIOL 2P96 Study Guide - Midterm Guide: Multinucleate, Basidiospore, Mucor

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Absent: basidiospore and ascospore development, both begin dikaryotic. Basidiomycota: begins with fragmenting, only diploid during karyogamy stage, undergoes only 1 meiotic division, mostly dikaryotic, due to presence of clamp connections, forms 4 x 1n exogenous meiospores on a basidium. Ascomycota: only dikaryotic in ascogenous hyphae, crozier stage, nucleic migration and kayrogamy forms diploid penultimate cell on crozier undergoes meiosis i and ii, post-meiotic mitosis, forms 8 x 1n endogenous meiospores (dikaryotic) in an ascus. 5 differences of oomycota from eumycota: oomycota (untrue fungi) Energy storage = laminarin: eumycota (true fungi) Energy storage = glycogen: chytrids, unicellular or filamentous, cell walls made of chitin (share with fungi, produce zoospores (different than fungi) Single, posterior whiplash flagellum: predominantly aquatic, these are rumen symbionts. Can digest cellulose for cows: glomeromycota, exhibit mutualistic symbioses. Produce am (arbuscular micorrhizae: produce large, asexual multinucleate spores om extrametrical hyphae. Singly or in sporocarps: no sexual reproduction, arbuscular micorrhizae, intramatrical hyphae.

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