Animal Migration and Food Chains

What is the primary reason many animals move from northern to southern regions starting in September?

• Their numbers are too large, and they have to move to find more room for the group.

• They are migrating because the weather in the northern states is getting too cold.

• They are hibernating to look for more food because they have eaten all the local food.

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Why do bears eat more food and chipmunks gather seeds to store for later?

• These animals are getting ready to hibernate through the winter months.

• These animals are preparing to travel long distances and need energy for the trip.

• These animals are preparing for a drought, and their food sources will dry up.

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Why do birds choose to migrate during certain seasons?

• To find warmer climates and more food sources.

• To escape from predators.

• To find new nesting sites.

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What environmental condition might lead a plant to enter dormancy?

• There is not enough water.

• It is preparing to produce seeds.

• Insects are feeding on the plant.

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Why do many animals in the African Savannah gather near rivers or lakes during the dry season?

• They need water to stay alive.

• They are looking for shade from trees.

• They want to escape from predators.

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What is the primary reason monarch butterflies travel to the South?

• To escape cold weather

• To meet other monarchs

• To gather nesting materials

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Students built a terrarium so they could study the physical charatneriscs of an environment support a community. It contains plants, grass , crickets, water, and a lizard.

Which organism in the terrarium shown above starts the flow of energy through the food chain?

• Cricket

• Water

• Grass

• Lizard

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Imagine a group of students is exploring the flow of energy in a shortgrass prairie ecosystem like the one shown above. Which food chain most accurately demonstrates the flow of energy in this ecosystem?

• Grasshopper ⟶ bird ⟶ rodent ⟶ buffalo

• Hawk ⟶ snake ⟶ mouse ⟶ grasshopper

• Grasshopper ⟶ mouse ⟶ snake ⟶ hawk

• Snake ⟶ hawk ⟶ skunk ⟶ mouse

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In the ecosystem shown, which organisms are expected to flourish, or do well, if finches are eliminated?

• Grass

• Grasshopper

• Snake

• Hawk

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The roadrunner is a desert bird that eats fruits and seeds. It also eats insects, spiders, scorpions, and rattlesnakes.

What would likely happen if the roadrunner population disappeared from its ecosystem?

• There would be no more fruits or seeds.

• There would be a decrease in spider populations.

• The rattlesnake population would stay the same.

• There would be an increase in scorpion populations.

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