5.12 Review

What would happen if there were no decomposers in an ecosystem?

• The population of producers would increase to compensate for the loss of decomposers.

• Energy from the sun would not be captured to enter the food web.

• Nutrients from dead organisms would not be recycled into the food web.

• There would be no change since the animals could eat another food source.

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Which of the following is NOT a decomposer?

• bacteria

• mushrooms

• earthworms

• grass

Which of the following describes an organism interacting with an abiotic factor?

• The frog jumps on a lily pad.

• The deer drinks the water.

• A large fish eats insects.

• A ladybug rests on the grass.

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Which of the following describes how biotic factors help the organisms survive?

• Fish swim in the water and use it to live.

• Nutrients in the soil help plants grow.

• The sun provides energy for a food web.

• A log provides shelter for animals and decomposers.

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When an animal consumes a plant, it is consuming plant ____________.

• energy

• abiotic factors

• matter

• sunlight

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Plants are _____________.

• Biotic

• Abiotic

When animals consume matter in a food web, they use it for ___________ to move around.

• nonliving

• factors

• energy

• water

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Is this creature biotic or abiotic?

• Biotic

• Abiotic

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If there was a drought (no rain) for 8 months, how would this affect the food chain?

• Mice will find other plants to eat.

• Hawks will consume more snakes for energy.

• Hawks will begin to consume foxes for energy.

• The hawk will be unable to get enough food for energy.

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A town is building a new road through a heavily wooded area home to many plants and animals. All of the following are ways the ecosystem may be affected EXCEPT-

• Animal habitats will be destroyed.

• Species may decrease in number.

• Animals will have more natural resources available to them.

• Animals may need to move/migrate to a new area for resources.

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