Ecology

In the woods, there are ducks and mice. They both compete for grasshoppers as the only source of food in that area at that time. The ducks outcompete the mice, and the mice die out in that area. This is an example of:

• Neutralism

• Commensalism

• The competitive exclusion principle

• Mutualism

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Barnacles are animals that cannot move. In order to get food, they attach to whales and catch any floating plankton in the water. The whale is neither helped nor harmed in the interaction. What type of symbiosis is this?

• Mutualism

• Commensalism

• Parasitism

• Neutralism

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In the wild, some alligators gets their teeth cleaned by birds. The birds gets their food from the alligators' teeth.

What type of symbiosis is this?

• Mutualism

• Commensalism

• Parasitism

• Neutralism

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NGSS.MS-LS2-2

In an ecosystem, there are populations of moose, rabbits, grass, and pine trees. Suddenly, a fire blazes through the area, which kills all of the populations. As the months go on, new species of grass begin to take root. This attracts animals, and eventually the ecosystem is restored.

What type of ecological succession happened?

• Primary succession

• Secondary succession

• Tertiary succession

• None of the above

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In this photo, what is an abiotic factor?

• Deer

• Grass

• rain

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What is this picture describing?

• It is describing natural selection.

• It is describing direct competition between flamingos and ducks.

• It is describing abiotic factors of the tundra.

• It is describing the niche of each bird.

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Study of interactions between organisms and their environment 

• niche
• community 
• ecology
• ecosystem

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Members of a species in a defined area

• Ecosystem
• community
• biodiversity
• population

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Non-living factor that affects an ecosystem

• biotic factor
• abiotic factor
• food chain 
• biome

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What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon

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