Biology Study Guide Chapter 4 & 5
Don’t forget to review your vocabulary words-they will also be included on the exam!!!
Provide a complete response to each of the following.
1. Graph the following data regarding housefly populations on the axis provided.
Week
# of
houseflies
0
2
1
4
2
8
3
16
4
32
5
64
6
128
7
256
8
512
9
1024
10
2048
a) Is this a J shaped curve or S shaped curve?
b) What type of growth does it represent?
2. Explain carrying capacity in terms of the death rates and birth rates.
3. Identify the characteristics of organisms with slow life history patterns. Give an
example of an organism with this pattern.
4. Identify the characteristics of organisms with rapid life history patterns. Give an
example of an organism that would exhibit this pattern.
5. Graph the following data regarding the deer population in Johnson County on the axis
provided.
Year
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
# of deer
50,000
75,000
100,000
200,000
400,000
450,000
500,000
550,000
575,000
600,000
600,000
a) Is this a J shaped curve or S shaped curve?
b) Identify 2 specific limiting factors for the growth of this population.
6. When an organism’s population reaches carrying capacity, it actually fluctuates above
and below the carrying capacity. Explain why this happens.
7. Organisms with rapid life history patterns are common in what type of environment?
8. Organisms with slow life history patterns are common in what type of environment?
9. Explain what a density dependent limiting factor is and give 3 examples.
10. Explain what a density independent limiting factor is and give 3 examples.
11. In a predator-prey relationship such as the lynx and the snowshoe hare:
a) what happens to the predator population if the prey population increases?
b) what effect does this have on the prey population?
c) what effect does this then have on the predator population?
12. What happens to the population when competition for resources increases?
13. Stress from overcrowding has been shown to cause 4 specific responses. Explain
each of these.
14. What type of growth is currently exhibited by the world’s human population?
15. What aspects of population do demographers study?
16. Why is human population growth different from that of other organisms?
17. Compare and contrast immigration and emigration.
18. How are countries categorized based on doubling time?
19. Graph the following age structure data on the grid provided:
Age range
Male % of
Female % of
population
population
0-12
30
29
13-25
25
26
26-45
20
21
46-65
15
15
66-85+
10
9
0
a) what type of growth rate is shown in this graph?
20. Give an example of an area with high biodiversity.
21. Give an example of an area with low biodiversity.
22. Tropical regions contain how much of Earth’s biodiversity?
23. If an organism is completely removed from a food web:
a) what will happen to the population that it uses as a food source?
b) what will happen to the population that uses it as a food source?
24. Discuss the effect of biodiversity on the stability of an ecosystem.
25. Identify 2 reasons why biodiversity is important to human life.
26. Contrast the classifications of extinct, endangered, and threatened.
27. Compare and contrast habitat fragmentation and habitat degradation.
28. What effect do exotic species have on an ecosystem?
29. What does the endangered species act do?
30. What are three things have been done to maintain the existence of biodiversity?