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Florida Memorial University *
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ECOLOGY
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Biology
Date
Jan 9, 2024
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Question 4 (Worth 3 points) (02.05 MC) Which of the following is an example of how a biotic factor can affect the population dynamics in an ecosystem? O Lack of water during a drought causes many of the individuals in a population to die. O Seasonal temperature changes cause a species to migrate between two ecosystems. O Excessive rain and flooding cause organisms in an area to relocate. @® The population of a predator increases following an increase in the population of its prey. Points earned on this question: 3
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Related Questions
Question 3 (Mandatory) (6 points)
You observe a newly-abandoned farm field. Make a prediction of how the field will change at the population, community,
and ecosystem levels as it moves from an early successional community to a late successional community.
Organize your answer like this:
Population Prediction:
Community Prediction:
Ecosystem Prediction:
Z
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Question 2 (Mandatory) (4 points)
Describe a circumstance in which two species could simultaneously occupy identical
niches without competitive exclusion?
신
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Question 5
What major workplace health hazard category would a virus like the COVID-19 Pandemic be
classified under?
O chemical
O ergonomic
O physical
O biological
Question 6
What is the name of the pay-for-performance plan that attempts to motivate teamwork. Also this pay-
for-performance type involves employees in a plan to help reduce cost, and this gain would be shared
with employees according to a predetermined formula?
O gain share
O commission
O goal share
O piece work
arrow_forward
Question 14
Not yet answered
Marked out of 1.00
Alberta has a lot of natural gas, coal, and oil below its
surface because it was once the bed of an inland sea.
The materials below the surface of this province could
be classified as a:
Select one:
a. carbon sink
b. carbon source
O
c. rapid carbon cycler
O
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Question 10
You are studying the population size of a plant species in a large grassland area.
The plants are evenly distributed across the area. Which population estimation
technique should use?
you
O Census
O Volume-based
O Mark-recapture
O Area-based
O Line-transect
< Previous
13
Next-
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Question 74
True or False? Symbiotic relationships never change.
O True
O False
Ouestion 75
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Question 7
What typically occurs once a population reaches a carrying capacity?
O the population will remain constant at that number
O the population will begin to decrease until there are few individuals remaining
O the population will fluctuate around the carrying capacity
O the population will continue growing exponentially
A Moving to another question will save this response.
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Question 31
In the Lotka-Volterra model for predator-prey interactions, which equation
represents a decline in the predator population?
OrN CNP or P m/ac
OrN r/c
O acNP
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QUESTION 3
(a) What is resource partitioning?
(b) Fully describe an excellent example of resource partitioning.
Samsung Triple Camera
Shot with my Galaxy A03s
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I need help with the 2 questions attached below
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QUESTION 14
According to the conceptual model of optimal foraging, as cumulative energy investment in foraging increases at a constant rate, total energy obtained eventually plateaus.
True
False
arrow_forward
Question 7 of 10
Which of the following pictures represents what scientists thought the
bottom of the Atlantic Ocean looked like before they investigated it in the mid-
1800s?
A
в
D
A. A
В. D
С. С
O D. B
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QUESTION 3
Below are 12 statements related to an ecological succession. Read
through the list and place the numbers in thg text boxes, in the
appropriate section of the Venn diagram.
1.
2. No previously existing life.
3. Occurs after a storm.
4. A climax community eventually forms at the end.
5. Triggered by a fire
6. Starts as the result of a receding glacier
7.. Previously existing life in habitat.
8. Features pioneer species.
9. Starts in a lake with sediment and a community.
10. Starts on bare rock.
11. Pioneer organisms form soil.
12. Happens relatively slowly.
13. Happens relatively quickly
Primary succession
Secondary succession
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Question 4 (Mandatory) (2 points)
Match the following graphs with their likely p-values.
4.5
3.5
I
Mean Height (SD)
2
Σ 15
0.5
>
6
I
5
Mean Height (SD)
0
Control
Phosphorus
Control
Nitrogen
Phosphorus
Nitrogen
Question 5 (Mandatory) (4 points)
4.5
T
1. p=0.0001
2. p=0.1439
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Question 25
Which of the following statements is NOT true?
O 45% of the incoming shortwave radiation is absorbed by the Earth's surface
O 21% of the incoming shortwave radiation is absorbed by the atmosphere
31% of the incoming shortwave radiation is reflected by the atmosphere and Earth's surface
O 28% of the incoming shortwave radiation is refracted by the atmosphere
O A balance exists between energy gains and losses for the Earth-atmosphere system around 36° latitude
Drevieue
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Question 1. Is the population in H-W equilibrium?
Observed genotype frequencies
●
■
●
f[A₁A₁] =0.16
f[A₁A₂] =0.48
f[A₂A₂] =0.36
O Question 2. Is the population in H-W equilibrium?
Observed genotype frequencies
f[A₁A₁] =0.04
f[A₁A₂] =0.12
● f[A₂A₂] =0.84
●
Question 3. Is the population in H-W equilibrium?
Observed genotype numbers
A₁A₁ =40
A1A2 =20
● A₂A2 =40
O Question 4: Is the population in H-W equilibrium?
Observed number of each genotype
A1A1=36
●
● A1A2=28
A2A2=36
Note that raw numbers are given. The question is whether observed
frequencies = expected frequencies. You must first compute the
genotype frequencies.
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Question 3
The introduction of the wolf caused a trophic cascade which had a(n)
effect on the growth of aspens?
O negative
indirect
O direct
O unrecognizable
A Moving to another question will save this response.
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4.
6.
8.
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D
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#3
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Question 7 Which of these protein foods is the leanest? O flounder OOOO eggs Otofu peanut butter pork tenderloin 0
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Question 11 (Mandatory) (2 points) ✓ Saved
Immigration or Extinction Rate
B
A
C
D
2
Mainland
Species Richness
Using the figure above, identify all true statements. CHOOSE ALL THAT ARE
CORRECT.
Curve C illustrates extinction rates on island 1.
Curve A illustrates immigration rates on island 2.
Curve B illustrates extinction rates on island 2.
Curve D illustrates extinction rates on island 2.
Question 12 (Mandatory) (2 points) ✓ Saved
You collect the following tree species data from the TC3 wood lot:
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QUESTION 3
The term “biomagnification” means that a chemical ____ at each trophic level in a food chain or web.
a.
enters the system
b.
changes
c.
becomes less concentrated
d.
undergoes chemical changes
e.
becomes more concentrated
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QUESTION 71
In optimal foraging
O A. animals always hunt in social groups.
OB.
an animal tends to eat the food that provides the most energy for the least amount of energy spent acquiring it.
OC.
animals can rarely afford to be selective.
OD.
groups of five to seven animals are most successful.
O E animals are typically most successful when they hunt alone.
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Question 85
In terms of net primary productivity, where are the most productive ecosystems found?
nearer the equator
in the temperate latitudes
in the polar regions
in the open oceans
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QUESTION 25
Most of the temperate grasslands in the northern hemisphere have been converted to:
Orchards for fruit production
O Crop land for vegetable production
O Crop land for grains
Tree plantations for timber
O Tree plantations for biomass
QUESTION 26
Ecologists characterize species richness by the r/K selection theory. What are the traits of K selected populations?
O A Live in a stable environment
B. Have a high survival rate but few offspring
OC Reproduce rapidly, early, with large numbers of offspring
O D. A and B
A and C
Click Save and Submit to save and submit. Click Save All Answers to save all answers.
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Question 3: I introduced 2 species of super-mutant ant species into my terrarium. These are the only species competing for resources.
Species 1's common name is the TEN-headed ZINGer ant and they have a population size of N1 and a carrying capacity of K1. The blue line shows the isocline for species 1.
Species 2's common name is the Evil Ant. The population size of species 2 is N2 and the carrying capacity is K2. The green line shows the isocline for species 2
The red dot is the present combination of N1 and N2.
Part a) Given the data how will the population of both species (N1 and N2) change- pick the correct colored arrow (pink, brown, black, or red) to show the direction that the combination of N1 and N2 will change
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QUESTION 1
Match the following statements on the left with the correct type of fallacies on the right:
What Americans need is patience. A water well goes A. Amphiboly
dry. Nature replenishes it by sending a good rain.
B. Equivocation
Nature shall replenish the great reservoirs.
Scientists say it takes a few million years. All we need C. Accent
is patience.
oil
The fund has a deficit of $57,000, which will be used to
pay teachers' salaries.
We have the finest politicians money can buy.
Volkswagen does it again.
A National Theatre is worth having for the sake of the
National Soul. (George Bernard Shaw)
I hope you will stay for lunch.
Click Save and Submit
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Question 12 (Mandatory) (2 points) ✓ Saved
You collect the following tree species data from the TC3 wood lot:
Species
Species
Community
A
B
Species
C
Species
D
Species
E
1
20
20
20
20
20
2
70
20
6
2
2
CHOOSE ALL THE CORRECT STATEMENTS FROM THE FOLLOWING LIST.
Diversity is higher in plot 2
Richness is higher in plot 1
☑Community 1 is probably more resistant to disturbance.
Community 2 is probably more resistant to disturbance.
Diversity is higher in plot 1
Question 13 (Mandatory) (5 points)
L
✓ Saved
Classify the following factors as either density dependent or density independent.
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Questions 8 and 9 only !
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Question 6
A spider web catches flying insects passively. Which functional response curve would demonstrate this relationship between prey abundance and capture rates.
O type 1
O type 2
O type 3
O type 4
A Moving to another question will save this response.
fs
esc
%
&
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Need help with 1 and 2 questions:
1.) Two different populations of commander butterfly were studied over a period of two years. The following results were obtained.
Population size of commander butterflies
Population| Original size| Final size 1 2436 2873
2 2185. 2649
Which of the following concepts would best compare the change in population size of the two populations?
A.) Growth rate (gr )
B.) Biotic potential (r)
C.) Density (Dp )
D.) Per capita growth rate (cgr )
2.) When population density reaches the carrying capacity of the environment, the death rate in the population becomes
A.) less than the birth rate
B.) equal to the birth rate
C.) more than the emigration rate
D.) more than the immigration rate
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- Question 14 Not yet answered Marked out of 1.00 Alberta has a lot of natural gas, coal, and oil below its surface because it was once the bed of an inland sea. The materials below the surface of this province could be classified as a: Select one: a. carbon sink b. carbon source O c. rapid carbon cycler Oarrow_forwardQuestion 10 You are studying the population size of a plant species in a large grassland area. The plants are evenly distributed across the area. Which population estimation technique should use? you O Census O Volume-based O Mark-recapture O Area-based O Line-transect < Previous 13 Next-arrow_forwardQuestion 74 True or False? Symbiotic relationships never change. O True O False Ouestion 75arrow_forward
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