Biodiversity Chapter 10 quiz

The term Biodiversity refers to

• The genetic makeup of a population
• The size of individual organisms
• The variety of life forms on Earth
• The number of species on Earth

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How many species are on earth?

• 1-2 billion
• 5-10 million
• 100-200 thousand
• 50-100 million

Which species is not a keystone species

• Sea Otters

• Bees

• Wolves

• dogs

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Which level of biodiversity helps to prevent the negative effects of bottlenecks?

• Ecosystem diversity

• Genetic diversity

• Species diversity

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The level of biodiversity that involves a variety of habits and communities is _____ diversity.

• ecosystem

• population

• genetic

• species

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What level of biodiversity is most commonly equated with the overall concept of biodiversity?

• species diversity
• ecosystem diversity
• population diversity
• genetic diversity

Why is biodiversity important to ecosystems?

• It helps populations adapt to ecological changes.

• It increases at each level of the food chain.

• It provides more abiotic factors for the ecosystem.

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How many species are known to be living on Earth?

answer choices

• between 10,000 and 100,000

• between 1 and 2 million

• between 5 and 9 million

• between 10 and 50 million

Which habitat exhibits the greatest biodiversity?

• A habitat with 15 different species with about 300 individuals each

• A habitat with 10 different species with about 75 individuals each

• A habitat with 4 different species with about 150 individuals each

• A habitat with only one species with about 2000 individual

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Define genetic diversity

• variation of genes within a species or population in a given area

• variety of ecosystems in a given area

• system made up of all the living and nonliving things in a given area

• disturbance in the environment conditions that cause genetic changes to occur in organisms

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