Biology 1108 - Exam 3 - Practice Exam
UPDATED 2026 QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS – YOUR ROAD TO
SUCCESS
Why are organisms such as mice, titmouse birds, and rabbits classified as primary
consumers within this specific ecosystem?
✔✔ They are categorized as primary consumers because they feed directly on
primary producers.
In this ecosystem, insects are the most numerous species, far exceeding the
population counts of all others. Based on this high abundance, how are they
characterized?
✔✔ Because of their sheer numerical superiority, they are identified as the
most dominant species in the ecosystem.
Snakes, buzzards, are frogs are all predators in this ecosystem. The following is
most likely to be competitively dominant:
a) Buzzards
b) Frogs
c) Snakes
d) None of the above
a) Buzzards
Which of the following is an example of a food chain in this food web?
a) Grasshoppers-frogs-snakes
b) Plantain-grasshoppers-berries-titmouse
c) Berries-ladybirds-titmouse-buzzard
d) Plantain-mouse-rabbit-fox
a) Grasshoppers-frogs-snakes
, Imagine that there is a particularly rainy season in the Sonoran Desert, which
results in more plant growth that serves as a plentiful food source for the desert
cottontail rabbit. Bobcats are predators that consume the cottontail rabbit. If we
wanted to predict the impact of the rainy season on the number of bobcats, we
would use the following equation:
a) N = m/ab
b) P = r/a
c) Both of the equations above would be useful
d) Either of the equations above would be useful
b) P = r/a
Imagine that there is a particularly rainy season in the Sonoran Desert, which
results in more plant growth that serves as a plentiful food source for the desert
cottontail rabbit. Bobcats are predators that consume the cottontail rabbit.
The variable that will be affected in this scenario is:
a) r
b) a
c) b
d) m
a) r
Imagine that there is a particularly rainy season in the Sonoran Desert, which
results in more plant growth that serves as a plentiful food source for the desert
cottontail rabbit. Bobcats are predators that consume the cottontail rabbit.
In this scenario, we would expect the:
a) Number of prey to increase
b) Number of predators to increase
c) A and B
d) None of the above
c) A and B
UPDATED 2026 QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS – YOUR ROAD TO
SUCCESS
Why are organisms such as mice, titmouse birds, and rabbits classified as primary
consumers within this specific ecosystem?
✔✔ They are categorized as primary consumers because they feed directly on
primary producers.
In this ecosystem, insects are the most numerous species, far exceeding the
population counts of all others. Based on this high abundance, how are they
characterized?
✔✔ Because of their sheer numerical superiority, they are identified as the
most dominant species in the ecosystem.
Snakes, buzzards, are frogs are all predators in this ecosystem. The following is
most likely to be competitively dominant:
a) Buzzards
b) Frogs
c) Snakes
d) None of the above
a) Buzzards
Which of the following is an example of a food chain in this food web?
a) Grasshoppers-frogs-snakes
b) Plantain-grasshoppers-berries-titmouse
c) Berries-ladybirds-titmouse-buzzard
d) Plantain-mouse-rabbit-fox
a) Grasshoppers-frogs-snakes
, Imagine that there is a particularly rainy season in the Sonoran Desert, which
results in more plant growth that serves as a plentiful food source for the desert
cottontail rabbit. Bobcats are predators that consume the cottontail rabbit. If we
wanted to predict the impact of the rainy season on the number of bobcats, we
would use the following equation:
a) N = m/ab
b) P = r/a
c) Both of the equations above would be useful
d) Either of the equations above would be useful
b) P = r/a
Imagine that there is a particularly rainy season in the Sonoran Desert, which
results in more plant growth that serves as a plentiful food source for the desert
cottontail rabbit. Bobcats are predators that consume the cottontail rabbit.
The variable that will be affected in this scenario is:
a) r
b) a
c) b
d) m
a) r
Imagine that there is a particularly rainy season in the Sonoran Desert, which
results in more plant growth that serves as a plentiful food source for the desert
cottontail rabbit. Bobcats are predators that consume the cottontail rabbit.
In this scenario, we would expect the:
a) Number of prey to increase
b) Number of predators to increase
c) A and B
d) None of the above
c) A and B
