BIOLOGY 1409 lab Total Practical Exam 1
Question 1
Choose the most accurate statement below concerning ecosystems.
Selected Answer:
d. Nutrients and energy both flow only one way through an ecosystem
Correct Answer:
b. Nutrients cycle and energy flows one way
• Question 2
1 out of 1 points
Energy lost as heat:
Selected Answer:
c. comes from the metabolism of organisms at each trophic level
Correct Answer:
c. comes from the metabolism of organisms at each trophic level
• Question 3
1 out of 1 points
The study of body plans and structures among groups of organisms is called
Selected Answer:
c. comparative morphology
Correct Answer:
c. comparative morphology
• Question 4
0 out of 1 points
Four of the five answers listed below are characteristics of mutations. Select the exception.
Selected Answer:
e. are heritable
Correct Answer:
a. are predictable.
• Question 5
0 out of 1 points
Variation in traits that affect which individuals survive and reproduce in each generation is
called __________________ .
Selected Answer:
d. catastrophism
263 Population Ecology
, Correct Answer:
d. natural selection
• Question 6
1 out of 1 points
A _______ is a group of individuals of the same species that occupy a certain area.
Selected Answer:
a. population
Correct Answer:
a. population
• Question 7
0 out of 1 points
There is abundant water on the Earth. We have a global water crisis because:
Selected Answer:
d. all of the above
Correct Answer:
c. most of our water is too salty for drinking or agriculture
• Question 8
1 out of 1 points
Mutations that neither harm nor help an organism are called:
Selected Answer:
d. neutral
Correct Answer:
d. neutral
• Question 9
1 out of 1 points
The categories of biogeochemical cycles include all of the following EXCEPT:
Selected Answer:
d. green plant cycle
Correct Answer:
d. green plant cycle
• Question 10
1 out of 1 points
The reason that the human population has increased to such a high level is that we have:
Selected Answer:
d. All of these choices.
Correct Answer:
d. All of these choices.
• Question 11
1 out of 1 points
264 Population Ecology
, Which is NOT a density-dependent, growth limiting factor?
Selected Answer:
d. flooding
Correct Answer:
d. flooding
• Question 12
1 out of 1 points
The fact that the average human birth weight remains at about seven pounds is due
to __________________ .
Selected Answer:
b. the forces of stabilizing selection.
Correct Answer:
b. the forces of stabilizing selection.
• Question 13
1 out of 1 points
Stabilizing selections means that:
Selected Answer:
c. the extremes of the population have a lesser chance to survive.
Correct Answer:
c. the extremes of the population have a lesser chance to survive.
• Question 14
0 out of 1 points
Which organism does not feed from a single trophic level?
Selected Answer:
b. zebra
Correct Answer:
c. mushroom
• Question 15
1 out of 1 points
Which of the following tends to stabilize gene frequencies among populations of a species?
Selected Answer:
b. Gene flow
Correct Answer:
b. Gene flow
• Question 16
1 out of 1 points
Which of the following will NOT promote speciation?
Selected Answer:
d. gene flow
265 Population Ecology
, Correct Answer:
d. gene flow
• Question 17
1 out of 1 points
More water is held in lakes and rivers than in
Selected Answer:
c. atmospheric water vapor
Correct Answer:
c. atmospheric water vapor
• Question 18
0 out of 1 points
Decomposers
Selected Answer:
c. include bacteria and fungi
Correct Answer:
d. all of these
• Question 19
0 out of 1 points
Select the exception concerning populations
Selected Answer: c.
density
Correct Answer: e.
habitat
• Question 20
0 out of 1 points
Disruptive selection:
Selected Answer:
d. both b and c
Correct Answer:
c. doesn't favor intermediate forms of a trait
• Question 21
1 out of 1 points
The maximum number of individuals in a population that can be sustained indefinitely by
the resources in a given environment is the:
Selected Answer:
c. carrying capacity
Correct Answer:
c. carrying capacity
• Question 22
266 Population Ecology
Question 1
Choose the most accurate statement below concerning ecosystems.
Selected Answer:
d. Nutrients and energy both flow only one way through an ecosystem
Correct Answer:
b. Nutrients cycle and energy flows one way
• Question 2
1 out of 1 points
Energy lost as heat:
Selected Answer:
c. comes from the metabolism of organisms at each trophic level
Correct Answer:
c. comes from the metabolism of organisms at each trophic level
• Question 3
1 out of 1 points
The study of body plans and structures among groups of organisms is called
Selected Answer:
c. comparative morphology
Correct Answer:
c. comparative morphology
• Question 4
0 out of 1 points
Four of the five answers listed below are characteristics of mutations. Select the exception.
Selected Answer:
e. are heritable
Correct Answer:
a. are predictable.
• Question 5
0 out of 1 points
Variation in traits that affect which individuals survive and reproduce in each generation is
called __________________ .
Selected Answer:
d. catastrophism
263 Population Ecology
, Correct Answer:
d. natural selection
• Question 6
1 out of 1 points
A _______ is a group of individuals of the same species that occupy a certain area.
Selected Answer:
a. population
Correct Answer:
a. population
• Question 7
0 out of 1 points
There is abundant water on the Earth. We have a global water crisis because:
Selected Answer:
d. all of the above
Correct Answer:
c. most of our water is too salty for drinking or agriculture
• Question 8
1 out of 1 points
Mutations that neither harm nor help an organism are called:
Selected Answer:
d. neutral
Correct Answer:
d. neutral
• Question 9
1 out of 1 points
The categories of biogeochemical cycles include all of the following EXCEPT:
Selected Answer:
d. green plant cycle
Correct Answer:
d. green plant cycle
• Question 10
1 out of 1 points
The reason that the human population has increased to such a high level is that we have:
Selected Answer:
d. All of these choices.
Correct Answer:
d. All of these choices.
• Question 11
1 out of 1 points
264 Population Ecology
, Which is NOT a density-dependent, growth limiting factor?
Selected Answer:
d. flooding
Correct Answer:
d. flooding
• Question 12
1 out of 1 points
The fact that the average human birth weight remains at about seven pounds is due
to __________________ .
Selected Answer:
b. the forces of stabilizing selection.
Correct Answer:
b. the forces of stabilizing selection.
• Question 13
1 out of 1 points
Stabilizing selections means that:
Selected Answer:
c. the extremes of the population have a lesser chance to survive.
Correct Answer:
c. the extremes of the population have a lesser chance to survive.
• Question 14
0 out of 1 points
Which organism does not feed from a single trophic level?
Selected Answer:
b. zebra
Correct Answer:
c. mushroom
• Question 15
1 out of 1 points
Which of the following tends to stabilize gene frequencies among populations of a species?
Selected Answer:
b. Gene flow
Correct Answer:
b. Gene flow
• Question 16
1 out of 1 points
Which of the following will NOT promote speciation?
Selected Answer:
d. gene flow
265 Population Ecology
, Correct Answer:
d. gene flow
• Question 17
1 out of 1 points
More water is held in lakes and rivers than in
Selected Answer:
c. atmospheric water vapor
Correct Answer:
c. atmospheric water vapor
• Question 18
0 out of 1 points
Decomposers
Selected Answer:
c. include bacteria and fungi
Correct Answer:
d. all of these
• Question 19
0 out of 1 points
Select the exception concerning populations
Selected Answer: c.
density
Correct Answer: e.
habitat
• Question 20
0 out of 1 points
Disruptive selection:
Selected Answer:
d. both b and c
Correct Answer:
c. doesn't favor intermediate forms of a trait
• Question 21
1 out of 1 points
The maximum number of individuals in a population that can be sustained indefinitely by
the resources in a given environment is the:
Selected Answer:
c. carrying capacity
Correct Answer:
c. carrying capacity
• Question 22
266 Population Ecology
