Everglades Food Chain

What was the primary reason for establishing Everglades National Park?

• To conduct scientific research

• To promote tourism

• To preserve historical landmarks

• To protect an ecosystem

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What are the two essential things every organism needs to grow and survive?

• Sunlight and soil

• Matter and energy

• Water and air

• Food and shelter

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Which process is used by green plants and some microorganisms to convert the sun's energy into food energy?

• Respiration

• Digestion

• Photosynthesis

• Fermentation

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What type of organism is considered a 'producer' in the Everglades ecosystem?

• Mosquito larva

• Gambusia

• Great blue heron

• Periphyton

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What is the role of a 'primary consumer' in a food chain?

• It eats secondary consumers

• It eats producers

• It is a top predator

• It synthesizes its own food

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Which organism is considered a 'secondary consumer' in the Everglades food chain?

• Gambusia

• American alligator

• Mosquito larva

• Great blue heron

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What percentage of chemical energy consumed by an organism is passed on to the next level in the food chain?

• About 50 percent

• About 25 percent

• About 75 percent

• About 10 percent

What is the '10 percent rule' related to in a food chain?

• The amount of water needed by organisms

• The speed at which organisms reproduce

• The lifespan of organisms

• The energy transfer between trophic levels

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What makes the American alligator a 'top predator' in the Everglades food chain?

• It can fly

• It eats plants

• It is eaten by other predators

• It is at the top of the food chain

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Why are there usually no more than four or five links in a food chain?

• Because of government regulations

• Because organisms refuse to eat more than four types of food

• Because of the 10 percent rule

• Because the sun only provides energy for up to five links

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