1. The study of ecology is organized into several levels of environmental interactions. Which of the following is the most accurate organization of those levels?
a. Organism, biosphere, population, ecosystem, community, biome
b. Organism, ecosystem, biosphere, population, biome, community
c. Community, ecosystem, biome, organism, population, biosphere
d. Organism, population, community, ecosystem, biome, biosphere
e. Ecosystem, community, biome, organism, population, biosphere

2. A large, deep lake in Georgia was sampled at two hour intervals for 24 hours. These samples were taken at the beginning of August. Temperature, oxygen content, and pH were all recorded. Examination of these data would show that the temperature changes exhibited over the 24 hour period.
a. Went up during the daylight hours and decreased at night
b. Decreased in the early morning but began to go up dramatically as the sun came up
c. Remained unchanged over the 24 hour period
d. Decreased until noon but increased until midnight
e. Choices 1 and 2 are correct

3. Use the list of abiotic and biotic features of an aquatic system to answer the following question.

I. abundant zooplankton
II. abundant phytoplankton
III. high concentration of oxygen
IV. lack of sufficient light for photosynthesis
V. strong swimming fish

Which of the above features would be found in a fast moving stream?
a. I, II, III, and V
b. III, and V
c. II, III, IV
d. III and V
e. All of the above

4. A population is defined as the number of organisms of the same species, living in the same area at the same time. The actual number of individuals living in the area can be determined using several methods.

I. the mark and recapture method
II. sample plot method (quadrant)
III. estimate by indirect indicators(example-count animal droppings, etc.)
IV. census (count all of the individuals)

The long-tailed field mouse lives in and around agricultural areas in Europe, Asia and North Africa. These mice are very elusive and have a very small home range. Which of the described methods would be the best to use to determine the number of mice living in a small field?
a. I
b. II
c. III
d. IV
e. I and II

Gopher tortoises live in burrows and range over several acres. Each gopher tortoise digs several burrows that he uses on a regular basis. The simplest method to develop a quick estimate of the gopher tortoise population in a 200 acre field would be
a. II
b. III
c. IV
d. II and IV

5. Populations that show rapid increases followed by equally rapid declines.
a. Logistic growth model
b. Boom and bust model
c. R-selection species
d. Carrying capacity
e. K-selection species

6. A population growth model that is slowed down by limiting factors. Initially, this population is J-shaped, but gradually levels off to resemble an S shape.
a. Logistic growth model
b. Boom and bust model
c. r-selection species
d. Carrying capacity
e. K-selection species

7. Population size is impacted and restricted by limiting factors. These limiting factors are environmental conditions that restrict population growth. Below is a list of some limiting factors. Use these to answer the following question.

I. Fire
II. Hurricane
III. Disease
IV. Predators
V. Food supply

Examples of density-dependent factors.
a. I, II, and III
b. II, III, and IV
c. III, IV, and V
d. IV and V
e. I and II

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