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Intro to Ecology/Population Ecology Practice Formative (MB)

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Last updated 11 months ago
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Question 1
1.

Which of the following are biotic factors (select all that apply)?

Question 2
2.

Which of the following are abiotic factors (select all that apply)?

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.

What ecological organization levels have both biotic and abiotic factors (select all that apply)?

Question 5
5.

What ecological organization levels have only biotic factors (select all that apply)?

Question 6
6.

What would all the alligators, frogs, plants, algae, fish, bacteria, etc. living in the St. Johns River be?

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.

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?

Question 9
9.

If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?

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.

Which of the following applies to the seals during this timeframe?

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.

Look at what occurs between 1937 - 1939 (the part there the population size drops). What do we call this period?

Question 20
20.

During that time period (1937 - 1939: the part where the population size is dropping) what is occurring?

Question 21
21.

Why does this process occur? (I wrote two sentences)

Question 22
22.

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)?

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.

When a population grows past the ecosystem's carrying capacity, what happens to the population?

Question 25
25.

Food, water, sunlight, shelter, and space are resources that are often examples of ________.

Question 26
26.

If there is less food than usual in an ecosystem (maybe because of a drought), then the population will most likley....

Question 27
27.

Any thing or organism that regulates the size of a population of another organism is known as ______?

Question 28
28.

In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

Question 29
29.

When a population size is above the carrying capacity, what will happen to the amount of competition within a species?

Question 30
30.

Exponential growth is representative of a population in a enviroment with _______ recources.

Question 31
31.

Logisitc growth is representative of a population in an envirement with _______ recources.

Question 32
32.

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?

Question 33
33.

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?

Question 34
34.

If trees are planted in rows in a grove what kind of dispersion is that?

Question 35
35.

If wolves move in packs what kind of dispersion is that?

Question 36
36.

In a population that grows, what is happening?

Question 37
37.

In a population that decreases the following is happening :

Question 38
38.

As the exponential phase of a logistic growth curve of a population starts to end which of the following occurs (select all that apply)

Question 39
39.

This number represents the number of individuals within a population per unit? Calculated by dividing the number of individuals per area.

Question 40
40.

What describes how organisms are arranged within an area?

Question 41
41.

What type of curve is logistic population growth?

Question 42
42.

What type of curve is expontential population growth?

Question 43
43.

The largest population size an environment can sustain is called?