Lesson 10 Ecosystem

All living things get their energy from which of the following sources?

• food
• water
• sun

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Which of the following is another word for a plant?

• autotroph
• heterotroph
• consumer

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Which of the following is an organism that eats only meat?

• herbivore
• carnivore
• omnivore

Which of the following terms describes an area where an organism lives?

• community
• habitat
• area

Which is represented by all of the bullfrogs living around a pond?

• community
• habitat
• population

What would most likely happen if the rabbit population was removed from the food chain grass —› rabbit —› fox?

• their would be more grass
• there would be less rabbits
• there would be more fox

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Which is an example of a parasitic relationship?

• a bee pollinates a flower
• a tapeworm takes nutrients from a dog
• an orchid lives in a tree but does not harm the tree

In which type of relationship do both species benefit?

• parasitism
• mutualism
• commensalism

What is the greenhouse effect?

• It is a phenomenon where the sun’s rays are absorbed by clouds.

• It is a phenomenon that occurs when heat escapes into space.

• It is when heat is trapped by gases, then sent back to earth’s surface.

• It describes the atmosphere’s composition.

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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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