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BIOL 2010 2012_term_2_annotatedExam

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BIOL 2010
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SC/BIOL 2010 (Plant Biology) 2nd Term Test (5 March 2012)
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SC/BIOL 2010.040 Plant Biology
Second Term Test
[01] Which one of the following terms does not describe a common trait, structure or
characteristic of either the Ascomycota or the Basidiomycota?
A. hymenium B. mycorrhizae C. dolipore D. zygotic meiosis
E. conidia F. septate G. haustoria
H. all describe a common trait, structure or characteristic
All of the traits and structures are found in either of the two fungal groups, including zygotic meiosis: H.
[02] Amongst the Ascomycota and Basidiomycota, which of the following characteristics are
unique to only one of the two phyla (choose the best answer)?
A. crozier B. haustoria C. mycelia D. clamp connections
E. persistent dikaryotic stage F. A and B G. A and D H. A, D and E
Crozier is specific to ascomycota, clamp connections play a role in the persistent dikaryotic state of basidiomycota, all others are found in both.
The answer is H.
Match the following terms with the most appropriate definition (Choose the best answer)?
[03] conidium pl. conidia H [04] haustorium pl. haustoria F [05] appressorium C
A. None of the below
B. A small mass of vegetative tissue; an outgrowth of the thallus, for example in liverworts or certain fungi.
C. A flattened, hyphal organ, from which a minute infection peg grows and enters the host.
D. The strips of tissue on the underside of the cap of many hymenomycetes.
E. A single tubular filament of a fungus, oomycete, or chytrid.
F. A projection of a fungal hypha that functions as a penetrating and absorbing organ.
G. A tough, resistant, resistant, nitrogen-containing polysaccharide forming the cell walls of certain fungi.
H. An asexual fungal spore not contained within a sporangium; it may be produced singly or in chains; it is often
The definitions come from your textbook.
Match the following images with the most appropriate fungal group (Choose the best answer)
[06] [07]
A. Ascomycete B. Ustilago C. Hymenomycete D. Gasteromycete
E. Basidiomycete F. Zygomycete G. Lichens H. Teliomycete
Both are ascomycota.
Questions 8 and 9 were not in the test due to a numbering error and are blank in the key.
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SC/BIOL 2010 (Plant Biology) 2nd Term Test (5 March 2012)
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[10] Identify the most appropriate group on the basis of the
vegetative and reproductive structures diagrammed in the
figure (Choose the best answer)?
A. Gasteromycete B. Ustomycete C. Teliomycete
D. Basidiomycete E. Lichens F. Hymenomycete
G. Ascomycete H. Deuteromycete (Fungi Imperfecti)
Directly from your textbook, it is a lichen: E.
[11] Which of the labeled regions identifies the location of
the mycobiont in the vegetative structure (Choose the best answer)?
A. None of the regions B. All of the regions C. 3, 4 and 5 D. 2, 5 and 6
E. 1 and 6 F. Only 6 G. 2 and 4 H. 2 and 5
The fungal symbiont forms the epidermis and invades algal cells wherever they are, so all regions contain the mycobiont: B.
[12] Which of the following is/are propagules of lichens —containing both the mycobiont and
algal or cyanobacterial photobiont— that serve to disseminate this unusual example of a
symbiotic organism (Choose the best answer)?
A. soredia B. ascospore C. gemma D. operculum
E. isidia F. peristome G. sclerotia H. none of the above
Soredia are the propagules of lichens (isidia are small outgrowths): A.
[13] Identify the numbered stage(s) in the
wheat rust ((Puccinia graminis var tritici)
when the wheat rust is a stable dikaryon
A. 1 B. 2 C. 3
D. 4 E. 5 F. 1 and 2
G. 2 and 3 H. 3 and 5
The persistent dikaryotic state corresponds to 4 in the life cycle
diagram (3 is where plasmogamy occurs, 5 is where karyogamy
occurs): D is the correct answer.
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