Question 1
A solution with a pH of 3:
is more alkaline than a solution with a pH of 2.
has a higher concentration of hydroxyl ions than a solution with a pH of 4.
is neutral.
is more acidic than a solution with a pH of 3.5.
Question 2
All populations of different species living and interacting within an ecosystem are referred to collectively as a(n):
biome.
community.
population.
ecosystem.
Question 3
Geographic isolates of a particular species that differ from other populations by one or more characteristics are considered to be:
clines.
subspecies.
evolutionary "dead ends."
ecotypes.
Question 4
Which of the following is done by toads to avoid hot, dry periods of the year?
Hibernation
Torpor
Diapause
Estivation
Question 5
The age of a tree is best approximated by:
estimating tree height.
counting tree growth rings.
measuring the diameter of a trunk at breast height (dbh).
counting the number of leaves.
Question 6
Owl species A has a carrying capacity of 2000, while another owl species B has a carrying capacity of 200. What is the logical conclusion of this?
Species A is larger than B.
Species B uses more resources per individual.
Species A uses more habitat per individual.
Species B feeds on A.
Question 7
The total number of observed links in the food web divided by the total number of species is the:
connectance.
Simpson index.
linkage density.
mean chain length.
Question 8
Secondary production might be lower in grasslands than in forests because:
average temperatures are lower.
average water availability is higher.
primary production is lower.
there is a higher biomass of animals in grasslands.
Question 9
Which biome contains the largest tree species in the world?
Coniferous forest
Deciduous forest
Tropical forest
Arctic forest
Question 10
The end of the Permian period was characterized above all by a mass extinction of:
shallow-water marine invertebrates.
dinosaurs and other large reptiles.
small mammals.
large mammals.
\
A solution with a pH of 3:
is more alkaline than a solution with a pH of 2.
has a higher concentration of hydroxyl ions than a solution with a pH of 4.
is neutral.
is more acidic than a solution with a pH of 3.5.
Question 2
All populations of different species living and interacting within an ecosystem are referred to collectively as a(n):
biome.
community.
population.
ecosystem.
Question 3
Geographic isolates of a particular species that differ from other populations by one or more characteristics are considered to be:
clines.
subspecies.
evolutionary "dead ends."
ecotypes.
Question 4
Which of the following is done by toads to avoid hot, dry periods of the year?
Hibernation
Torpor
Diapause
Estivation
Question 5
The age of a tree is best approximated by:
estimating tree height.
counting tree growth rings.
measuring the diameter of a trunk at breast height (dbh).
counting the number of leaves.
Question 6
Owl species A has a carrying capacity of 2000, while another owl species B has a carrying capacity of 200. What is the logical conclusion of this?
Species A is larger than B.
Species B uses more resources per individual.
Species A uses more habitat per individual.
Species B feeds on A.
Question 7
The total number of observed links in the food web divided by the total number of species is the:
connectance.
Simpson index.
linkage density.
mean chain length.
Question 8
Secondary production might be lower in grasslands than in forests because:
average temperatures are lower.
average water availability is higher.
primary production is lower.
there is a higher biomass of animals in grasslands.
Question 9
Which biome contains the largest tree species in the world?
Coniferous forest
Deciduous forest
Tropical forest
Arctic forest
Question 10
The end of the Permian period was characterized above all by a mass extinction of:
shallow-water marine invertebrates.
dinosaurs and other large reptiles.
small mammals.
large mammals.
\ 
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