BIO205 Exam Review Questions
and Answers 100% Pass
Which of the following is a completely non-random process of evolution?
a. mutation
b. genetic drift
c. natural selection
d. bottleneck
e. founder effect - CORRECT ANSWER-c. natural selection
(T/F) Both a mixed deciduous forest and a healthy tree are dynamic steady states -
CORRECT ANSWER-True
It is advantageous for lemurs to have a bigger tail. What type of selection is this? -
CORRECT ANSWER-Directional
What type of selection did the Grant's find when they noticed a microevolutionary
change in beak size of finches after severe drought? - CORRECT ANSWER-
Directional selection
Which is an example of a behavioural adaptation?
,a. bright colour of butterfly indicates toxicity
b. chemicals made by plants kill off neighbouring plants
c. mating displays of birds of paradise
d. muted feather colours of female robin - CORRECT ANSWER-c. mating
displays
2 species of butterflies live in the same habitat/geographic location but one is
found in the late spring, while the other is only found in the early autumn. What
type of reproduction barrier is this? - CORRECT ANSWER-Prezygotic - they
can't even attempt to fertilize
A small, herbaceous plant grows in the cracks of a sidewalk. Individuals are pulled
and mowed by humans. What life history strategy does this represent? -
CORRECT ANSWER-Annual
Would a population experiencing high rates of adult mortality evolve to reach
sexual maturity earlier or later in life? - CORRECT ANSWER-Earlier
In its early years, an organism with a long life expectancy and determinate growth
should favour:
a. growth over offspring production; age of sexual maturity will also occur in early
years
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,b. offspring production over growth; age of sexual maturity will be delayed to later
years
c. offspring production over growth; age of sexual maturity will occur in early years
d. growth over offspring production; age of sexual maturity will be delayed to later
years - CORRECT ANSWER-d. growth over offspring production; age of sexual
maturity will be delayed to later years
An environment with low rates of disturbance but unfavourable abiotic conditions
should favour plants that:
a. reach maturity quickly
b. have low seed investment
c. grow quickly
d. are short lived - CORRECT ANSWER-b. have low seed investment
(this is characteristic of most perennial plants; as you can see in the question, a
plant that lives in low disturbance but harsh abiotic conditions will be a perennial
and so it does not fit with the other characteristics of annual plants such as
reaching maturity quickly, growing quickly, or being short lived)
Which is true regarding ecological niches?
, a. the fundamental niche encompasses a larger geographic range than the realized
niche
b. the realized niche encompasses a larger geographical range than the fundamental
niche - CORRECT ANSWER-a. the fundamental niche encompasses a larger
geographical range than the realized niche
What type of dispersal pattern would be shown by an organism that lives
exclusively in the carcasses of decomposing animals? - CORRECT ANSWER-a.
clustered
The ecological envelope is most similar to what niche? - CORRECT ANSWER-
realized
When performing a mark-recapture experiment, if no marked individuals are
recaptured the second time, the equation will
a. estimate the population at 1
b. estimate the population to be infinitely large
c. estimate the population to be equal to the total number of individuals marked in
the initial capture
d. be undefined
e. estimate the population to be zero - CORRECT ANSWER-d. be undefined
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and Answers 100% Pass
Which of the following is a completely non-random process of evolution?
a. mutation
b. genetic drift
c. natural selection
d. bottleneck
e. founder effect - CORRECT ANSWER-c. natural selection
(T/F) Both a mixed deciduous forest and a healthy tree are dynamic steady states -
CORRECT ANSWER-True
It is advantageous for lemurs to have a bigger tail. What type of selection is this? -
CORRECT ANSWER-Directional
What type of selection did the Grant's find when they noticed a microevolutionary
change in beak size of finches after severe drought? - CORRECT ANSWER-
Directional selection
Which is an example of a behavioural adaptation?
,a. bright colour of butterfly indicates toxicity
b. chemicals made by plants kill off neighbouring plants
c. mating displays of birds of paradise
d. muted feather colours of female robin - CORRECT ANSWER-c. mating
displays
2 species of butterflies live in the same habitat/geographic location but one is
found in the late spring, while the other is only found in the early autumn. What
type of reproduction barrier is this? - CORRECT ANSWER-Prezygotic - they
can't even attempt to fertilize
A small, herbaceous plant grows in the cracks of a sidewalk. Individuals are pulled
and mowed by humans. What life history strategy does this represent? -
CORRECT ANSWER-Annual
Would a population experiencing high rates of adult mortality evolve to reach
sexual maturity earlier or later in life? - CORRECT ANSWER-Earlier
In its early years, an organism with a long life expectancy and determinate growth
should favour:
a. growth over offspring production; age of sexual maturity will also occur in early
years
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,b. offspring production over growth; age of sexual maturity will be delayed to later
years
c. offspring production over growth; age of sexual maturity will occur in early years
d. growth over offspring production; age of sexual maturity will be delayed to later
years - CORRECT ANSWER-d. growth over offspring production; age of sexual
maturity will be delayed to later years
An environment with low rates of disturbance but unfavourable abiotic conditions
should favour plants that:
a. reach maturity quickly
b. have low seed investment
c. grow quickly
d. are short lived - CORRECT ANSWER-b. have low seed investment
(this is characteristic of most perennial plants; as you can see in the question, a
plant that lives in low disturbance but harsh abiotic conditions will be a perennial
and so it does not fit with the other characteristics of annual plants such as
reaching maturity quickly, growing quickly, or being short lived)
Which is true regarding ecological niches?
, a. the fundamental niche encompasses a larger geographic range than the realized
niche
b. the realized niche encompasses a larger geographical range than the fundamental
niche - CORRECT ANSWER-a. the fundamental niche encompasses a larger
geographical range than the realized niche
What type of dispersal pattern would be shown by an organism that lives
exclusively in the carcasses of decomposing animals? - CORRECT ANSWER-a.
clustered
The ecological envelope is most similar to what niche? - CORRECT ANSWER-
realized
When performing a mark-recapture experiment, if no marked individuals are
recaptured the second time, the equation will
a. estimate the population at 1
b. estimate the population to be infinitely large
c. estimate the population to be equal to the total number of individuals marked in
the initial capture
d. be undefined
e. estimate the population to be zero - CORRECT ANSWER-d. be undefined
COPYRIGHT ALL RIGHTS RESERVED ©️ 2025
