Biology Quiz 1

What are the three pillars of sustainability?

• Social, economic, personal

• Social, economic, environmental

• Personal, economic, environmental

• Social, personal, environmental

An experimental control is used as

• a substitute when there aren’t enough experimental samples

• a way to determine what color your sample should be

• a standard of comparison to verify results

• a backup in case your experiment fails

A scientific model can be used to do which of the following?

• Make predictions about a system

• Demonstrate scientific processes

• Illustrate relationships in ecosystems

• All of the above

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Which of the following is most likely the result of a cause-and-effect relationship?

• A fish population declining rapidly after an oil spill in its ecosystem

• A bird population increasing rapidly after a large storm in its ecosystem

• A deer population remaining steady after a new housing development is built near its ecosystem

• Tree cover increasing after a major earthquake

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Which of the following would be the best indicator to determine the sustainability of a fishery in a large lake?

• Tracking the price that the fish is sold for

• Tracking the population levels of the fish in the lake

• Recording how many fish are caught each weekend at the lake

• Limiting the number of fishers allowed to fish in the lake

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Scientific models are often used to help understand relationships between organisms in ecosystems. If a scientists developed a model of a fishery in a large lake, which of the following questions would the model likely be able to help answer? (choose all that apply)

• How might an increase in fishing limits affect the fish population levels in the lake?

• Will a new fishing limit cause the predator–prey relationships in the lake to change?

• How might changing just one aspect of fishing limits affect the fish population levels in the lake?

• Are the current fishing limits sustainable for this lake?

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Which of the following are ways that a scientific model would likely be used to investigate stability and change in a fishery? (choose all that apply)

• By demonstrating how fish populations change as fishing limits change

• By demonstrating how a fish population fluctuates over time

• By demonstrating how a sudden event, such as an oil spill, affects fish population levels

• By demonstrating how the increasing number of fishers affects the fish populations

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Which group can best be described as a population?

• All the organisms in a forest

• The living and nonliving factors in a lake

• The life in Earth’s atmosphere

• All the honeybees of one species in an orchard

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An ecologist wants to estimate the size of a mouse population in a meadow. On the first day, the ecologist captured and marked 50 mice. On the second day, the ecologist caught 40 mice, and 10 of them were marked. The estimated size of the population is:

• 50

• 100

• 200

• 500

The graph in the picture shows the population growth of mosquitos in an ecosystem. Based on the data in the graph, which of these statements is true?

• The population reaches carrying capacity about two-thirds of the way through the first year.

• The resources that mosquitoes rely on become scarcer over the course of the year.

• The population is growing exponentially.

• The death rate of this population is higher than the birth rate.

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