BIOLOGY 1050 EXAM 4 ECU
QUESTIONS AND ANSWERS
What best defines a biome? - Correct Answers -Areas with distinct plant communities
and associated with particular climates
The distribution of terrestrial biomes across the globe corresponds most to? - Correct
Answers -Climate
What is the main source of energy that drives global climate? - Correct Answers -Solar
Energy
What are wind circulation patters driven by? - Correct Answers -The uneven heating of
earth's surface
What populations does genetic drift have the strongest effects in? - Correct Answers -
Small and isolated
Postzygotic Barriers - Correct Answers -Mating produces a hybrid who does not survive
long after reproduction or if they do survive they are infertile or have reduced fertility
Temporal - Correct Answers -Mating at different times of the year
Gamete Incompatability - Correct Answers -Unable to fertilize the egg
What does the biological species concept define a species as? - Correct Answers -Any
group of actually or potentially interbreeding species that produce viable, fertile offspring
Scientists caught 20 seals and used them to create a new population. What will least
likely affect these seals? - Correct Answers -Random Mating
How is extinction represented in a tree diagram? - Correct Answers -A branch ends
What taxonomic rank is the LEAST inclusive? - Correct Answers -Genus
Urey and Miller mixed H2, CH4 (methane), and NH4 (ammonia) in the early 1950s and
a few days later found what in the system? - Correct Answers -Amino Acids
, What is the biological species concept primarily based on? - Correct Answers -
Reproductive Isolation
What is an isolating mechanism that includes hybrid mortality and hybrid infertility? -
Correct Answers -Postzygotic
The taxonomic rank that includes species but not families is what? - Correct Answers -
Genus
What is the taxonomic rank from most to least inclusive? - Correct Answers -Domain
Phylum
Family
Genus
Species
The current mass extinction is believed to be primarily caused by what? - Correct
Answers -Human Actions
The extinction that occurred on earth 65 million years ago marked the end of what? -
Correct Answers -The Age of Dinosaurs
When two or more members of the same species live in the same place at the same
time, they constitute a what? - Correct Answers -A Population
The population size that a particular habitat can support indefinitely is called the what? -
Correct Answers -Carrying Capacity
What type of effect has an increasing impact as the population size increases? - Correct
Answers -Density-dependent effect
A species most likely to exhibit the Type 2 survivorship curve would be what? - Correct
Answers -Blue Jays
A population pyramid that gets wider in shape with higher age groups represents _____
while a population pyramid with nearly parallel lines represents _______. - Correct
Answers -Declining growth; Stationary growth
If a tiger and a lion were to mate, what may be a result? - Correct Answers -Sterile or
partially sterile offspring are produced
Blue-footed boobies do not mate with birds who do not know a complex dance. This is
an example of what? - Correct Answers -Behavioral Isolation
What type of selection favors organisms that have character values at both extremes of
the phenotypic distribution? - Correct Answers -Distributive
QUESTIONS AND ANSWERS
What best defines a biome? - Correct Answers -Areas with distinct plant communities
and associated with particular climates
The distribution of terrestrial biomes across the globe corresponds most to? - Correct
Answers -Climate
What is the main source of energy that drives global climate? - Correct Answers -Solar
Energy
What are wind circulation patters driven by? - Correct Answers -The uneven heating of
earth's surface
What populations does genetic drift have the strongest effects in? - Correct Answers -
Small and isolated
Postzygotic Barriers - Correct Answers -Mating produces a hybrid who does not survive
long after reproduction or if they do survive they are infertile or have reduced fertility
Temporal - Correct Answers -Mating at different times of the year
Gamete Incompatability - Correct Answers -Unable to fertilize the egg
What does the biological species concept define a species as? - Correct Answers -Any
group of actually or potentially interbreeding species that produce viable, fertile offspring
Scientists caught 20 seals and used them to create a new population. What will least
likely affect these seals? - Correct Answers -Random Mating
How is extinction represented in a tree diagram? - Correct Answers -A branch ends
What taxonomic rank is the LEAST inclusive? - Correct Answers -Genus
Urey and Miller mixed H2, CH4 (methane), and NH4 (ammonia) in the early 1950s and
a few days later found what in the system? - Correct Answers -Amino Acids
, What is the biological species concept primarily based on? - Correct Answers -
Reproductive Isolation
What is an isolating mechanism that includes hybrid mortality and hybrid infertility? -
Correct Answers -Postzygotic
The taxonomic rank that includes species but not families is what? - Correct Answers -
Genus
What is the taxonomic rank from most to least inclusive? - Correct Answers -Domain
Phylum
Family
Genus
Species
The current mass extinction is believed to be primarily caused by what? - Correct
Answers -Human Actions
The extinction that occurred on earth 65 million years ago marked the end of what? -
Correct Answers -The Age of Dinosaurs
When two or more members of the same species live in the same place at the same
time, they constitute a what? - Correct Answers -A Population
The population size that a particular habitat can support indefinitely is called the what? -
Correct Answers -Carrying Capacity
What type of effect has an increasing impact as the population size increases? - Correct
Answers -Density-dependent effect
A species most likely to exhibit the Type 2 survivorship curve would be what? - Correct
Answers -Blue Jays
A population pyramid that gets wider in shape with higher age groups represents _____
while a population pyramid with nearly parallel lines represents _______. - Correct
Answers -Declining growth; Stationary growth
If a tiger and a lion were to mate, what may be a result? - Correct Answers -Sterile or
partially sterile offspring are produced
Blue-footed boobies do not mate with birds who do not know a complex dance. This is
an example of what? - Correct Answers -Behavioral Isolation
What type of selection favors organisms that have character values at both extremes of
the phenotypic distribution? - Correct Answers -Distributive
