Life Science Review

How would the woodpecker population in a forest area most likely be affected if a housing development is built in that area?

• They would produce more offspring.
• They would change the color of their feathers.
• They would experience a decrease in competition.
• They would experience a decrease in available food.

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Which human activity in a forest has a positive effect on the ecosystem?

• cutting down trees to make farmland
• planting new trees where old ones were cut down
• clearing the land to build new homes
• building a new highway through the area

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An organism that gains its energy from consuming producers and consumers is a(n) _________.

• Producer

• Consumer

• Decomposer

• Omnivore

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Herbivores only gain their energy by consuming animals.

• True

• False

What is this diagram know as?

• Food Web

• Energy Pyramid

• Biomass Chart

• Biome

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An organism that gains its energy from consuming producers is what level consumer?

• Producer

• Primary Consumer

• Secondary Consumer

• Tertiary Consumer

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What level consumer is the hawk?

• Primary

• Secondary

• Tertiary

• Quaternary

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Why is the sun so important to life?

• It allows animals to see and play.

• It provides the original source of energy it most ecosystems.

• It gives off heat that causes things to energize.

• Life doesn't need the sun.

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As a rule, about _____% of energy makes it to the next trophic level in any given energy pyramid.

• 10

• 20

• 40

• 80

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In the food web pictured, which organism is sometimes a secondary consumer and sometimes a tertiary consumer?

• Mouse

• Rabbitt

• Snake

• Hawk

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