Benefits of Biodiversity

Which best explains biodiversity?

• The population of a species in an ecosystem

• The variety of species in an ecosystem

• The study of life

• The difference number of biomes on Earth

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Which is not one of the benefits of biodiversity?

• Economic value

• Uniform genetics in a species

• Survival of species in the ecosystem

• Cultural value

Which ecosystem has the greatest amount of biodiversity?

• Polar regions

• Deciduous forest

• Tundra

• Tropical rainforest

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Which is an example of genetic biodiversity?

• Different skin color within a species

• Different types of species within an ecosystem

• Every organism has the same genetic sequence

• All populations look the same within a species

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A drought has hit this grassland biome. How will this effect the rabbit population?

• The rabbits will increase in number.
• The rabbit population will stay the same.
• The rabbit population will decrease.
• The rabbit population will become extinct immediately.

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In this tundra food web, if grasses were removed what would happen to the sustainability of the ecosystem?

• There would be an overpopulation of arctic hares and lemmings.
• Polar bears would move to a new ecosystem
• The ecosystem would collapse because it lost its main producer
• Wildflowers would die out from the ecosystem

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Brown trout consume (eat) more tadpoles when the fly larvae reduce in number (decrease).  This proves...

• The dependence of organisms and biodiversity in an ecosystem
• Diversity increases as organisms decrease
• Losing an animal is good for ecosystems
• Changes in ecosystems create new organisms

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Which of the following situations contributes to stability in an ecosystem?

• increase in biodiversity

• decrease in biodiversity

• extinction of a population from the ecosystem

• removal of many populations of organisms

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What are three things that create biodiversity?

• species, genetic variation, and ecosystem

• mutation, disorder, regression

• genes, cells, traits

• water, land, mountains

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The ocean ecosystem has a high sustainability because of

• strong, persistent currents

• predator/prey relationships

• green plants growing on the bottom

• the large variety of different organisms

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