BIOL 301 Exam 3 questions with
verified answers 100% pass 2025/2026
b. II - correct answer ✔✔A type _____ functional response occurs when a predator's rate of
prey consumption increases linearly with increasing prey and then satiates
a. I
b. II
c. III
d. IV
c. stabilize when prey have refuges - correct answer ✔✔Huffaker's laboratory experiment of
predator and prey species of mites demonstrated that predator and prey cycles
a. stabilize with increased food sources.
b. stabilize when males are added.
c. stabilize when prey have refuges.
d. are always unstable.
a. the probability of an encounter leading to prey's capture - correct answer ✔✔In Lotka-
Volterra models of predator-prey interactions, c represents
a. the probability of an encounter leading to prey's capture.
b. the efficiency of converting consumed prey into predator offspring.
c. The per capita mortality rate of predators.
d. the intrinsic growth rate.
,c. equal to zero - correct answer ✔✔In Lotka-Volterra models, a population is stable when its
rate of change is
a. greater than zero.
b. less than zero.
c. equal to zero.
d. None of the above.
b. joint population trajectory - correct answer ✔✔Simultaneous examination of predator and
prey population trends is called a
a. dual population trajectory.
b. joint population trajectory.
c. dual population isocline.
d. joint population isocline.
a. coevolution - correct answer ✔✔The Indian gray mongoose (Herpestes edwardsii) is a small
mammal that is known for its ability to kill venomous king cobras (Ophiophagus hannah).
Mongooses have evolved acetylcholine receptors that make them resistant or immune to the
cobra's venom. What is likely responsible for this?
a. coevolution
b. natural selection
c. structural defenses
d. chemical defenses
,b. Mullerian mimicry - correct answer ✔✔The resemblance of poison dart frog species of the
genus Ranitomeya to one another in Peru is an example of
a. Batesian mimicry.
b. Mullerian mimicry.
c. crypsis.
d. a chemical defense.
c. Batesian mimicry - correct answer ✔✔The viceroy (Limenitis archippus) is a palatable North
American butterfly that has coloration similar to that of another species of unpalatable
butterfly, the monarch (Danaus plexippus). This is an example of
a. crypsis.
b. Mullerian mimicry.
c. Batesian mimicry.
d. camouflage.
d. predation - correct answer ✔✔What is the driving force in the 10-year cycle of lynx and hare
abundance?
a. competition
b. low resources
c. climate change
d. predation
c. caffeine - correct answer ✔✔Which of the following is an example of a plant alkaloid?
, a. tannin
b. lignin
c. caffeine
d. latex
a. horizontal - correct answer ✔✔A parasite moving between individuals other than parents
and their offspring uses _____ transmission.
a. horizontal
b. vertical
c. diagonal
d. vector
a. low exposure to the host's immune system - correct answer ✔✔Because of its relationship
with its host, the ectoparasite has
a. low exposure to the host's immune system.
b. low exposure to its natural enemies.
c. low exposure to the external environment.
d. difficulty moving between hosts.
c. Reservoir species do not die of the parasite and can be continuous source of the parasite -
correct answer ✔✔How do reservoir populations allow parasites to persist in nature?
a. Reservoir species transmit the parasite more frequently than host species, so the parasite
infects a larger number of individuals.
b. Reservoir species are necessary for reproduction of the parasite.
verified answers 100% pass 2025/2026
b. II - correct answer ✔✔A type _____ functional response occurs when a predator's rate of
prey consumption increases linearly with increasing prey and then satiates
a. I
b. II
c. III
d. IV
c. stabilize when prey have refuges - correct answer ✔✔Huffaker's laboratory experiment of
predator and prey species of mites demonstrated that predator and prey cycles
a. stabilize with increased food sources.
b. stabilize when males are added.
c. stabilize when prey have refuges.
d. are always unstable.
a. the probability of an encounter leading to prey's capture - correct answer ✔✔In Lotka-
Volterra models of predator-prey interactions, c represents
a. the probability of an encounter leading to prey's capture.
b. the efficiency of converting consumed prey into predator offspring.
c. The per capita mortality rate of predators.
d. the intrinsic growth rate.
,c. equal to zero - correct answer ✔✔In Lotka-Volterra models, a population is stable when its
rate of change is
a. greater than zero.
b. less than zero.
c. equal to zero.
d. None of the above.
b. joint population trajectory - correct answer ✔✔Simultaneous examination of predator and
prey population trends is called a
a. dual population trajectory.
b. joint population trajectory.
c. dual population isocline.
d. joint population isocline.
a. coevolution - correct answer ✔✔The Indian gray mongoose (Herpestes edwardsii) is a small
mammal that is known for its ability to kill venomous king cobras (Ophiophagus hannah).
Mongooses have evolved acetylcholine receptors that make them resistant or immune to the
cobra's venom. What is likely responsible for this?
a. coevolution
b. natural selection
c. structural defenses
d. chemical defenses
,b. Mullerian mimicry - correct answer ✔✔The resemblance of poison dart frog species of the
genus Ranitomeya to one another in Peru is an example of
a. Batesian mimicry.
b. Mullerian mimicry.
c. crypsis.
d. a chemical defense.
c. Batesian mimicry - correct answer ✔✔The viceroy (Limenitis archippus) is a palatable North
American butterfly that has coloration similar to that of another species of unpalatable
butterfly, the monarch (Danaus plexippus). This is an example of
a. crypsis.
b. Mullerian mimicry.
c. Batesian mimicry.
d. camouflage.
d. predation - correct answer ✔✔What is the driving force in the 10-year cycle of lynx and hare
abundance?
a. competition
b. low resources
c. climate change
d. predation
c. caffeine - correct answer ✔✔Which of the following is an example of a plant alkaloid?
, a. tannin
b. lignin
c. caffeine
d. latex
a. horizontal - correct answer ✔✔A parasite moving between individuals other than parents
and their offspring uses _____ transmission.
a. horizontal
b. vertical
c. diagonal
d. vector
a. low exposure to the host's immune system - correct answer ✔✔Because of its relationship
with its host, the ectoparasite has
a. low exposure to the host's immune system.
b. low exposure to its natural enemies.
c. low exposure to the external environment.
d. difficulty moving between hosts.
c. Reservoir species do not die of the parasite and can be continuous source of the parasite -
correct answer ✔✔How do reservoir populations allow parasites to persist in nature?
a. Reservoir species transmit the parasite more frequently than host species, so the parasite
infects a larger number of individuals.
b. Reservoir species are necessary for reproduction of the parasite.
