MCU3 Quiz

Which ecosystem is most likely to have the greatest biological diversity?

• A tank with many goldfish.

• A tundra region with penguins.

• A pine tree in which 3 kinds of birds live.

• A rainforest with many different types of plants and animals.

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Wetlands are a natural parts of watershed systems. Which of these is a way that wetlands directly benefit humans?

• Provide nesting grounds for birds

• Decreasing erosion around shorelines.

• Reducing flooding in adjacent towns.

• Increasing biodiversity near the ocean.

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Which of these describes a way in which humans could increase biodiversity in a marine ecosystem?

• They could introduce new species to the ecosystem.

• They could limit fishing to only one kind of fish in the ecosystem.

• They could ban boating, snorkeling, and scuba diving in the ecosystem.

• They could restrict the amount of each type of fish or shellfish harvested from the ecosystem.

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Which of these characteristics is often used a measure of an ecosystem's health?

• the variety of species that live there

• the number of people who live there

• the amount of pollution that occurs there

• the types of activities that can be done there

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Coral reefs are found in coastal ecosystems and are high in biodiversity. Which statement is true about coral reefs?

• Matter and energy are not passed throughout a coral reef.

• Coral reefs usually contain only a few different types of fish and coral.

• Coral reefs would not be able to recover from an ecosystem disturbance.

• There are many different species of plants and animals found on a coral reef.

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How does the biodiversity in an ecosystem relate to how quickly an ecosystem can recover from a disturbance?

• The number of species increases the ability of the ecosystem to recover from disturbance.

• The number of species decreases the ability of an ecosystem to recover from disturbance.

• The number of species present in an ecosystem remains constant before and after a disturbance.

• The number of species does not affect the time needed for an ecosystem to recover from a disturbance.

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Which of these support the statement that we must protect diversity since it affects resource availability?

• Diversity decreases ecosystem productivity because different species use resources in different ways.

• A greater number of only a few species increases ecosystem resiliency and ability to resist disturbance.

• A variety of many different species increases ecosystem health by concentrating human made toxins in water.

• Diversity maintains ecosystem health by recycling and storing nutrients maintaining water quality and stabilizing climate.

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This table lists the number and variety of organisms in four different ecosystems. Based on the table, which ecosystem is most likely to recover from a disturbance.

• Ecosystem 1

• Ecosystem 2

• Ecosystem 3

• Ecosystem 4

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When designing technology to solve environmental problems, environmental engineers must consider factors that limit the design. What are these factors called?

• trade-offs

• constraints

• prototypes

• metholodical thinking

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Which of these describes an example of a keystone species that scientists should make efforts to protect?

• More than 1,000 newly hatched wood frog eggs in a forest ecosystem.

• A gopher tortoise that provides a home to more than 300 different species of animals in its burrow.

• A nonnative population of lionfish living on a coral reef in Florida that have no natural predators.

• A population of mistletoe plants that are parasitic because they depend on other trees and plants in the ecosystem in order to get what they need to survive.

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