CB9 Ecosystems

In a meadow ecosystem, a population of rabbits increases. What populations are most likely to increase as a result?

• foxes, hawks, and other predators of the rabbits

• leafy plants that rabbits eat

• rabbits that live elsewhere

• worms that live in the meadow soil

Without decomposers, what would build up on the ground and not return to the soil?

• large rocks

• rain water

• bacteria and other microorganisms

• dead plant and animal matter

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The role of plants in a food web is 

• consumer
• decomposer
• predator
• producer

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How do animals depend on plant for survival?

• Animals help spread seeds of plants for new growth
• Animals are producers in a food web
• Plants and animals need sunlight to survive
• Animals eat plants and other animals that eat plants for food

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How do plants get their source of energy (food)?

• Plants get their food from the soil and water
• Plants use the energy from the sun, air, and water to make their food
• Plants get their food from minerals
• Plants get their food from the decaying plants and animals

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Which of these relationships is harmful?

• crocodile and plover bird
• Two scavenger birds fighting to eat a dead animal
• A flea on a dog
• A ladybug eating aphids on a plant

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What is a primary consumer?

• An organism that eats meat.

• An organism that eats plants.

• An organism that eats dead things.

• An organism that makes it own food.

What is a carnivore?

• An organism that eats plants.

• An organism that make its own energy.

• An organism that eats meat.

• An organism that eats dead things.

Which is a biotic factor?

• Fox
• Mountain
• Air
• Sunlight

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An individual living thing is a/an __________.

• habitat
• ecosystem
• organism
• population

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