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Midterm

BIOL 20102014_term_2_annotatedExam


Department
Biology
Course Code
BIOL 2010
Professor
All
Study Guide
Midterm

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SC/BIOL Plant Biology Second Term Test (28 February 2014) page 1 of 4
Match the following definitions with the appropriate term.
[01] A closed spherical ascoma
[02] Intimate and mutually beneficial symbiotic associations
between fungi and roots; characteristics of most vascular
plants.
[03] A receptive protuberance of the ‘female’ gametangium
for the conveyance of spermatia.
A. ascogenous hyphae
B. cleistothecium
C. conidiophore
D. calyptra
E. mycorrhizae
F. trichogyne
G. volva
H. telium
The definitions come from the textbook glossary. A closed ascoma is a cleistothecium (B), the fungal/root symbiosis is a mycorrhizae (E), and the
last is found in the Neurospora lifecycle, it’s the trichogyne (F)
[04] Although Chytridiomycota is now grouped with the major fungal groups (Zygomycota,
Ascomycota and Basidiomycota), it has many traits which are different from any of the other
groups. But, which of the following trait(s) does it share with the other major groups?
A. coenocytic (multi-nucleate cell units) B. chitinous cell walls
C. dikaryotic vegetative colonies D. asexual spore production from conidiophores
E. motile zoospores F. A and B G. B and C H. A, B and D
The shared traits are multi-nucleate cell units and chitinous walls (F)
[05] Entomophthorale is an example of an order (member of the Zygomycota) of ecological
importance for which of the following reason(s)?
A. It causes soft rot on many species of plants, some of importance as crops (especially fruits and seeds).
B. It is the cause of the Muscii blight, affecting cereal crops such as wheat and barley.
C. Many members of the order (and other Zygomycota) form an intimate symbiotic relation with the roots of plants
(the endomycorrhizae).
D. They are often a pathogen of insects and other small animals, and could be used for biocontrol of common insect
pests.
E. It is the major fungal order forming an intimate symbiotic relation with algae (usually Chlorophytes, rarely the
prokaryotic cyanobacteria) to create the remarkable lichens.
F. Many members of the order are common spoilage molds (growing on bread and cheese, for example, making
them inedible).
G. C and E
H. None of the above.
The name (ento [insect]) provides a hint, it’s an order that ‘eats’ insects alive (D)
[06] Which of the following is/are correct for the photograph (choose the best answer)?
A. The image shows an example of the spore-ejecting structure of Pilobolus
(Zygomycota).
B. This is an example of a zygosporangial structure of one of the
Glomeromycetes, in which the conidiophores are about to break through the
cellulose wall of the plant host.
C. It appears to be a basidium (Basidiomycota), based on the presence of
sterigma.
D. The image shows a beaked perithecia (the term used to describe an
ascomata (Ascomycota) with a small opening for ejection/release of the
ascospores).
E. It appears to be a germinating zoosporangium of Chytridiomycota, within
its host.
F. It is the spore-bearing structure of Armillaria (Basidiomycota).
G. It is an ascoma, containing ascii and ascospores
H. None of the above
From your textbook, it has ascii and ascospores inside, but is beakless (unlike Neurospora in your lab), the best answer is G.
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