Energy Flow in an Ecosystem

What is a biotic factor?

• A living organism but not a dead organism

• Something that is living or that has lived

• A nonliving part of the environment

• The role an organism plays in its environment

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What is a habitat?

• The specific place an organism lives in its ecosystem

• The role an organism plays in its ecosystem

• A level of organization in an ecosystem

• A characteristic of all living things

What is a secondary consumer?

• An organism that eats only plants

• An organism that eats only animals

• An organism that eats producers

• An organism that eats primary consumers

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Which of the following is a decomposer?

• An earthworm

• A mushroom

• Moss

• An omnivore

The energy that is used by a plant to carry out photosynthesis comes from

• A primary consumer

• A decomposer

• The sun

• An herbivore

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If a rabbit eats a plant and a fox eats the rabbit, the rabbit is a

• A secondary consumer

• An omnivore

• A primary consumer

• A decomposer

Food chains usually do not go past third level consumers because

• There is nothing to eat the third level consumer.

• The amount of energy available is too low to support another level.

• Decomposers will quickly break down third level consumers.

• Third level consumer have no natural predators.

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If a bobcat hunts and kills a mouse, this is an example of

• Parasitism

• Competition

• Cooperation

• Predator-Prey relationship

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The niche of an organism is

• where it lives in an ecosystem.

• where it gets its resources.

• how an organism impacts its environment

• secondary consumer

When a tapeworm grows inside of a pig's stomach and uses nutrients from the pig's digested food, we call this

• competition

• mutualism

• commensalism

• parasitism

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