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BESC 204 Final review Questions & Answers
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BESC 204 Final review Questions & Answers
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BESC 204 Final review Questions &Answers
R-selected species Correct Ans-An ecological concept for an organism that:
Is selected for by its rate of reproduction. These organisms grow rapidly, utilize simple nutrients,
have a short phase of growth, produce many offspring-each with a low chance of reproductive
success.
Reinheitsgebot Correct Ans-The German Purity Law stating that a true beer can have only
four ingredients (yeast, hops, malted barley and water)
Resveratrol Correct Ans-A phytoalexin found mainly in red wine that exhibits both
antioxidant and anti-inflammatory properties.
Sclerotium
(pl= sclerotia) Correct Ans-A compact mass of hyphae with or without host tissue, usually
with a darkened rind, and capable of surviving under unfavorable environmental conditions.
Example: Ergot of Rye
Secondary metabolite Correct Ans-Products of metabolism that are not essential for normal
growth, development or reproduction of an organism. In this sense they are "secondary".
Examples from class include any of the mycotoxins; as well as beneficial medicinals such as
penicillin.
Septum
(pl=septa) Correct Ans-crosswalls occurring at regular intervals in the hyphae of Ascomycetes
and Basidiomycetes. These are usually perforated and they define 'cell compartments' of the
hyphae.
Spermagonium
, (pl=spermagonia) Correct Ans-The flask shaped spore bearing structure of the Rust fungi
that produces haploid spermatia (male) and receptive hyphae (female), both are haploid
structures.
Sporangium
(pl = sporangia) Correct Ans-A specialized cell in which spores are produced. These are found
in the Chytridiomycota and the Zygomycota. Spores are produced in a sporangium through
cytoplasmic cleavage. Often the word is modified to be more specific about the kind of spores
produced. For example, a Zoosporangium is a cell in the chytrids in which zoospores are
produced.
Sterigmatum
(pl = sterigmata) Correct Ans-The projections from a basidium on which basidiospores are
born.
Stoma
(pl = Stomata) Correct Ans-Natural openings on plant leaves that often provide sites for entry
of fungi colonizing the plant.
Superficial Mycoses Correct Ans-Fungal diseases on hair, nail, cornea and skin
Systemic infection Correct Ans-Is a generic term for infection caused by microorganisms in
animals or plants, where the causal agent (the microbe) has spread actively or passively in the
host's anatomy and is disseminated throughout several organs in different systems of the host.
Teliospores Correct Ans-Thick walled resting spores that are the teleomorph of the Rusts and
Smuts. The teliospore is the site of karyogamy where two dikaryotic haploid nuclei produce a
diploid nucleus. Concurrent with meiosis is the production of the basidium from the teliospore.
Telium
(pl = Telia) Correct Ans-The sporulating structure of the Rust fungi that bears teliospores.
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