Ecology Test Review
General Biology (83 pts)
1.
What is ecology?
2.
What the difference between a biotic and abiotic factor? Give an example of each.
3.
What is the biosphere?
a.
4.
Aquatic ecosystem terminology:
a. Photic zone
b.
5.
List and give a description of the 5 levels of the biosphere.
Aphotic zone
Give a general description of the following biomes:
a. Tundra
b.
Taiga
c.
Tropical rainforest
d.
Desert
e.
Temperate forest
f.
Temperate grassland
6.
What is population density?
7.
Why do biologists use sampling?
8.
What are some limitations on the accuracy of sampling methods?
9.
What is carrying capacity?
10. Look at the graph to the right:
a. What is the carrying capacity in the graph?
b.
If each vertical line represents a year, in
what year did the population first reach
the carrying capacity?
c.
What is the current population size (N)?
11. What are some things that can affect the
carrying capacity of a population?
12. What is a density dependent factor?
a.
Give an example.
13. What is a density-independent factor?
a.
Give an example.
14. Explain the cycle of a predator/prey relationship:
a. When the prey population booms, the predator population ________________
b. When the predator population booms, the prey population _________________
c. When the prey population busts, the predator population ___________________
d. When the predator population busts, the prey population _________________
15. Give a short description of what will happen to the population size of these age structure diagrams.
_______________________________
a.
_______________________________
What type of growth do we typically see in:
i. less-developed countries? Why?
ii. More-developed countries? Why?
16. Terms to Know:
a. Microclimate
b.
Tropics
c.
Polar Zones
d.
Temperate Zones
e.
Fundamental niche
f.
Realized niche
g.
Camouflage
h.
Mimicry
i.
Competitive Exclusion
j.
Commensalism
k.
Mutualism
l.
Parasitism
_______________________________
Population Practice Problems
22. There are 300 sunflowers in a meadow. Each year, 75 new seedlings are established and 35 plants die.
How many trees will be in the forest next two years?
Year 1:
N=
b=
d=
r=
work for growth=
new population size=
Year 2:
New N=
work for growth=
new population size=
25. There are 950 deer in a herd. The herd tends to average 450 births and 275 deaths every year. The
environment can only support around 1100 deer. How many deer will be in the herd the next two years?
Year 1:
N=
K=
b=
d=
r=
work for growth=
new population size=
Year 2:
N=
K=
r=
work for growth=
new population size=