Intro to Ecology/Population Ecology Practice Formative (MB)
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Question 1
1.
Question 2
2.
Use this image for the next question.
Question 3
3.
Look at the above image and describe it using the terms abiotic factors, biotic factors, ecosystem, and niche. Remember, your answer will be marked wrong and then when you submit you can compare your answer to mine. For reference I wrote 6 sentences.
Question 4
4.
Question 5
5.
Question 6
6.
Question 7
7.
All the members of the same species living in the same area at the same time is called a ___________.
Question 8
8.
Question 9
9.
Question 10
10.
What growth pattern describes a population who's growth rate slows or stops following a period of exponential growth?
Question 11
11.
Largest number of individuals of a population that the enviroment can support is known as the _____________ of that population.
For the next few questions look at this graph. Assume that there is a population of red foxes that arrive in a new, isolated area of Ohio and this is their growth over a period of 800 years.
Question 12
12.
What type of growth pattern is being exhibited over the course of these 800 years?
Question 13
13.
Describe the graph using the following terms (be specific by including data - these should be relatively robust answers - I wrote 5 sentences): exponential growth, logistic growth, carrying capacity, limiting factors. Remember this will be marked wrong until you submit and then you can compare your answer to mine.
For the next few questions look at this graph. There is a population of seals that arrives on an island where there weren't seals of this species beforehand. You are measuring the population size of these seals from 1910 - 1950 and collect the following data:
Question 14
14.
What type of microevolution is occurring at the start of this scenario? (this is a throwback to the evolution unit)
Question 15
15.
If you were only looking at the seal population growth from 1910 - 1930 you would describe this type of growth as _________________ growth.
Question 16
16.
Why do you think the population starts off with this type of growth? I wrote one sentence for this.
Question 17
17.
Question 18
18.
If you are looking at the population from 1910 - 1950, you would describe this overall type of growth as a ______________ growth pattern.
Question 19
19.
Question 20
20.
Question 21
21.
Why does this process occur? (I wrote two sentences)
Question 22
22.
Question 23
23.
Here write an overall description of the graph including data using the following vocabulary: logistic growth, carrying capacity, overshoot, collapse, limiting factors. I wrote about 5 sentences.
This is the end of the questions refering to the seal graph.
Question 24
24.
Question 25
25.
Question 26
26.
Question 27
27.
Question 28
28.
Question 29
29.
Question 30
30.
Question 31
31.
Question 32
32.
Question 33
33.
Question 34
34.
Question 35
35.
Question 36
36.
Question 37
37.
Question 38
38.
Question 39
39.
Question 40
40.
Question 41
41.
Question 42
42.
Question 43
43.
Which of the following are biotic factors (select all that apply)?
Rocks
Water
Fish
Trees
Bacteria
Fungi
Rain
Lightning
Algae
Sponges
Humans
Which of the following are abiotic factors (select all that apply)?
Rocks
Water
Fish
Trees
Bacteria
Fungi
Rain
Lightning
Algae
Sponges
Humans
What ecological organization levels have both biotic and abiotic factors (select all that apply)?
Organism
Population
Community
Ecosystem
Biome
Biosphere
What ecological organization levels have only biotic factors (select all that apply)?
Organism
Population
Community
Ecosystem
Biome
Biosphere
What would all the alligators, frogs, plants, algae, fish, bacteria, etc. living in the St. Johns River be?
An organism
A population
A community
An ecosystem
If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population?
It will increase
It will decease
It will stay the same
It will fluctuate
If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?
It will increase
It will decrease
It will stay the same
It will fluctuate
Which of the following applies to the seals during this timeframe?
The birth rate is equal to the death rate
The birth rate is higher than the death rate
The birth rate is lower than the death rate
Look at what occurs between 1937 - 1939 (the part there the population size drops). What do we call this period?
End of the overshoot and collapse
Carrying capacity
Limiting facors
During that time period (1937 - 1939: the part where the population size is dropping) what is occurring?
The birth rate is equal to the death rate
The birth rate is higher than the death rate
The birth rate is lower than the death rate
What is the carrying capacity of the seals (while this is not the case, assume that I am only refering to the breeding male seals when talking about the carrying capacity)?
9
10
11
9,000
10,000
11,000
When a population grows past the ecosystem's carrying capacity, what happens to the population?
Continues to grow
The population starts to die off to return to carrying capacity
The population will go extinct due to lack of recources
the population grows then finds a new carrying capacity
Food, water, sunlight, shelter, and space are resources that are often examples of ________.
limiting factors
Competitive exclusion
Interspecific interactions
If there is less food than usual in an ecosystem (maybe because of a drought), then the population will most likley....
stay the same
decrease
increase
Any thing or organism that regulates the size of a population of another organism is known as ______?
a limiting measure
a limiting factor
factorization
materlialization
In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?
butterfly population
sunlight
grass available
When a population size is above the carrying capacity, what will happen to the amount of competition within a species?
decrease
increase
Exponential growth is representative of a population in a enviroment with _______ recources.
limited
unlimited
Logisitc growth is representative of a population in an envirement with _______ recources.
limited
unlimited
There are 2000 Hydrilla verticilla species per square kilometer in a certain area of a body of water. To which population characteric does this information refer?
dispersion
population size
population density
A small farming community in Florida covers 17 square kilometers. There are 680 individuals who live within the town limits. What is the population density of this community?
0.05 individuals per square kilometer
40 individuals per square kilometer
120 individuals per square kilometer
9.5 individuals per square kilometer
If trees are planted in rows in a grove what kind of dispersion is that?
Clumped
Uniform
Random
If wolves move in packs what kind of dispersion is that?
Clumped
Uniform
Random
In a population that grows, what is happening?
the birth rate gets higher than the death rate
the birth rate is constant and the death rate increases
the birth gets lower than the death rate
the birthrate and the death rate remain contant
In a population that decreases the following is happening :
the birthrate and the death rate remain equal
the death rate gets lower than the birthrate
the death rate stays the same and the birth rate increases
the death rate gets higher than the birthrate
As the exponential phase of a logistic growth curve of a population starts to end which of the following occurs (select all that apply)
the population size stays the same without fluctuating
The population growth starts to slow down
The population growth starts to speed up
The population starts to level off at the carrying capacity
This number represents the number of individuals within a population per unit? Calculated by dividing the number of individuals per area.
population distribution
population growth
population density
What describes how organisms are arranged within an area?
population distribution
population growth
population density
What type of curve is logistic population growth?
J curve
S curve
What type of curve is expontential population growth?
J curve
S curve
The largest population size an environment can sustain is called?