Envirnments Units 7-9

Desert plants like a cactus have adaptations for survival, such as -

• Large, complex root systems

• Ability to store water

• Seeds that are heat- and drought-resistant

• All of these choices

Which of the following organisms is considered a decomposer?

• grasses
• vultures
• worms
• snakes

Organisms that get energy by making their own food are called

• Producers
• Consumers
• Decomposers
• Omnivores

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After a frog hatches from an egg it looks just like an adult frog.

• True
• False

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Short Answer on Test: Why will having fewer insects affect the mice?

• The mice will not have enough insects to eat.
• It will not affect the mice.
• The mice will have too many insects to eat.

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In the food chain pictured, the source of energy for the water plant is ______.

• Sun
• Water Plant
• Mayfly
• Trout

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Which picture would be third to show the flow of energy through the food chain.

• Snake
• Sun
• Carrot
• Rabbit

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What do the arrows show in a food chain picture?

• They always point to the smallest animals.
• They point to the animal that tastes the best.
• They always point to the producers.
• They point in the direction that energy is flowing.

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The shortgrass prairie is an ecosystem found in the Great Plains. Many different populations of animals depend on the prairie ecosystem for survival. A typical community includes animals such as snakes, birds, mice, rodents, and insects.

Which food chain most accurately demonstrates the flow of energy in a shortgrass prairie ecosystem?

• grasshopper → bird → rodent → buffalo

• hawk → snake → mouse → grasshopper

• grasshopper → mouse → snake → hawk

• snake → hawk → skunk → mouse

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Observe the food chain above. Which organism’s population would increase if finches were removed from the ecosystem?

• Grass

• Grasshopper

• Snake

• Hawk

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