Understanding Animal Structures

Which is an internal structure?

• Hair

• Teeth

• Lungs

• Claws

The function of the heart is to

• Exchange gases

• Pumps blood

The ________ of the fish allow it to take in oxygen.

• fins
• gills
• scales
• lungs

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A body part on the outside of an animal that helps it survive is called a(n) _____

• internal structure

• external structure

• organism

• adaptation

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Something inside an animal that helps it survive is called a(n) _______

• organism

• shelter

• external structure

• internal structure

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I have lungs to help me breathe in air.

I have fur to keep warm.

I have teeth to eat food.

I have claws to help me dig for food and protect myself.

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I have scratching feet to dig for food.

I have wings to fly to get food and protect myself.

I have feathers to keep me warm.

I have a beak to eat bugs or seeds.

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I have dry, scaly skin to hold moisture and stay warm.

I have claws for burrowing and digging.

I have a hard shell for shelter and protection.

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I have eyes to help me see predators.

I have gills to breathe in air.

I have fins to move and balance in water.

I have scales to make my body flexible.

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I have wet, moist skin to breathe and hold moisture.

I have a sticky tongue to catch food.

I have sticky feet to climb.

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