Biodiversity Basics

Biodiversity, aka biological diversity, usually refers to

• the same species in a general location

• the number of different species in a given area

• the number of animal species in a given area

• the number of plant species in a given area

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A population is

• a group of similar species in different areas

• a group of the same species in the same geographic area.

• a group of several species in the same geographic area

• a group of several species along with their abiotic factors in a small area.

When a population grows past the ecosystem's carrying capacity, what happens to the population?

• Continues to grow
• The population starts to die off to return to carrying capcity
• The population will go extinct due to lack of resources
• The population grows then finds a new carrying capacity

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High biodiversity removes the predators and parasites in the ecosystem and makes it safer.

• True

• False

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High biodiversity makes the food web more complex and better able to support the most species, even if some populations decrease.

• True

• False

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High biodiversity ensures that many different ecological niches (jobs, roles) are filled, which helps the ecosystem function well.

• True

• False

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High biodiversity makes it more likely that the ecosystem will be able to keep functioning after a disturbance, such as disease or natural disaster.

• True

• False

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High biodiversity is a sign of a healthy ecosystem.

• True

• False

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High biodiversity makes an ecosystem more sustainable because the food web is stronger and organisms perform a wider variety of functions.

• True

• False

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An organism that uses sunlight to create its own food is known as a:

• Producer
• Heterotroph
• Consumer
• Decomposer

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