Name ____________________________
Mrs. Geithner-Marron (Bio 200)
Date _________
Period _______
Unit 12 Ecology & Populations Quiz REVIEW
1. Define:
a. Community
b. Ecosystem
c. Population
2. How can we determine the size of a population/how many individuals there are? Describe at
least 2 methods.
3. How can populations be arranged/distributed in an area?
4. What is population density? How is it calculated?
5. Which 2 factors cause the population to increase?
6. Which 2 factors cause the population to decrease?
Name ____________________________
Mrs. Geithner-Marron (Bio 200)
Date _________
Period _______
7. What is a population pyramid (aka age structure diagram)? What can they help us do?
8. For each population pyramid below:
a. describe which type of growth will be seen (rapid growth, slow growth, zero/no
growth, negative growth/shrinking) and explain why.
b. tell which type of country would be represented by a pyramid of that shape
(developing/less developed or developed/more developed)
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4.
Name ____________________________
Mrs. Geithner-Marron (Bio 200)
Date _________
Period _______
9. After which historical event (time period) did the human population begin to increase rapidly?
10. For the graphs below:
a. What type of population growth does each graph represent (cyclical, exponential,
logistic)?
b. Why does each graph have that shape? (ex. The population is under ideal conditions
and can reach its biotic potential; The population has reached its carrying capacity
due to environmental resistance such as not enough food; The population is
fluctuating due to a predator-prey relationship.)
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Name ____________________________
Mrs. Geithner-Marron (Bio 200)
11. Why don’t populations increase forever (in most real-world situations)?
12. Define: abiotic.
13. Give examples of abiotic limiting factors.
14. Define: biotic.
15. Give examples of biotic limiting factors. (How are they usually described?)
16. Define/describe:
a. symbiosis
b. commensalism
c. mutualism
d. parasitism
e. predation
Date _________
Period _______