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BESC 204 Exam #1- Questions & Answers
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BESC 204 Exam #1- Questions & Answers
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BESC 204 Exam #1- Questions &Answers
Tip cells curve to form a hook-like structure called a Correct Ans-- Crozier
Perethecium Correct Ans-- Closed ascocarp with a pore (ostiole) at the top, and a wall of its
own
Apothecium Correct Ans-- An open ascocarp
Cleistothecium Correct Ans-- A completely closed ascocarp
Asexual reproduction of Ascomycota Correct Ans-- Through mitosis ; Clonal
- Asexual spores are conidia, which produce only one spore at a time
Deuteromycota Correct Ans-- "Second class fungi"
- Imperfect fungi
- not a formal phyla: a category of mostly ascomycota (but sometimes basidiomycota) that have
lost the ability to sexually reproduce (or it hasn't been discovered) and are therefore hard to
classify
Conidium (pl. conidia) Correct Ans-- Non-motile, asexual spore formed one at a time of a
conidiogenous cell
- Cell wall of conidium and the conidiogenous cell is continuous
- Not formed by cleavage of cytoplasm
Characteristics of Basidiomycota Correct Ans-- Produce a basidiospore as the sexual spore
- Produce a basidium, usually on a macroscopic basidiocarp
, - Production of a well developed septate mycelium
- Production of clamp connections in some species
- Presence of Dolipore Septa in some species
- Extended Dikaryotic stage
Most Basidiomycota form their Basidiospores in/on a structure called the Correct Ans--
Basidiocarp
Commonalities between Basidiomycota and Ascomycota Correct Ans-- Compartmentalized
Mycellium
- Dikaryotic stage (Extended in Basidiomycetes)
- Specialized spore producing tissue (Hymenium)
- Production of Conidia (rare in basidiomycetes)
- Very likely derive from common ancestor
"Lower Fungi" make Correct Ans-- Sporangia
"Higher Fungi" make: Correct Ans-- Conidia
Clamp Connections in Basidiomycota Correct Ans-- A lateral connection between adjacent
cells of a dikaryotic hypha
- Ensures that each cell of the hypha will contain two dissimilar nuclei
Appressorium Correct Ans-- Atructure by which a pathogenic fungus attaches itself to a plant
Dolipore Septum Correct Ans-- Barrel-shaped swelling around central pore of Basidiomycota
septa
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