Exam (elaborations)
2003 USABO OPEN EXAM QUESTIONS AND ANSWERS
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2003 USABO OPEN EXAM QUESTIONS AND ANSWERS
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Name: Score:28 Multiple choice questions
Term 1 of 28
Which group of plants has vascular tissue but does not produce seeds?
I. Mosses
II. Ferns
III. Gymnosperms
[]
I
[]
II
[]
III
[]
II & III
Term 2 of 28
Which of the following is true for transport in xylem?
[]
The primary force involved is osmotic pressure
[]
Xylem is the primary site for transport of sucrose
[]
Movement through xylem depends mainly on transpiration
[]
All of the above
,Term 3 of 28
During migrations, some birds use which of the following as reference frameworks?
I. The sun
II. Constellations
III. Earth's magnetic field
[]
I only
[]
I and II only
[]
I and III only
[]
I, II, and III
Term 4 of 28
Generally, there are more species per square kilometer in which of the following types of
ecosystem?
[]
Temperate grassland
[]
Arctic tundra
[]
Boreal forest
[]
Coral reef
,Term 5 of 28
Predation is considered a _________ interaction, while Mutualism is considered a ___________
interaction.
[]
+/+, +/+
[]
+/0, -/-
[]
-/-, +/+
[]
+/-, +/+
Term 6 of 28
The promoter region of a prokaryotic gene is located ______ to the gene and is the binding site
for ______.
[]
3'...DNA polymerase
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3'...RNA polymerase
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5'...DNA polymerase
[]
5'...RNA polymerase
, Term 7 of 28
Allopatric speciation refers to species formed after which type of separation:
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niche
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temporal
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behavioral
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geographic
Term 8 of 28
Suppose gene "C" is the gene for color. Its dominant allele has the effect of allowing the
production of fur color while its recessive allele interrupts color production. At another locus,
there exists another gene that influences color, at which black (B) is dominant to brown (b).
What is the relationship between these genes called?
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Epistatic
[]
Peralogous
[]
Dominant
[]
Antagonistic
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