Structure and Function of Animals

Which is an internal structure?

• Hair

• Teeth

• Lungs

• Claws

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Which external structure will help animal catch its prey?

• Hair

• Sharp claws

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Some animals, such as wolves, have thick fur, while other animals, such as birds, have feathers.
The function of these body coverings is similar because of --

• their ability to hide from predators.
• the temperature of the environment they live in.
• their ability to attract the attention of the other animals.
• the types of food they eat.

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Some animals, such as birds, have beaks, while other animals, like horses, have large mouths with flat teeth.
The difference in these structures is most closely related to -- 

• the sounds the animals make.
• the habitat the animals live in.
• the type of offspring they have.
• the types of food these animals eat.

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The whiskers of a cheetah and the antennae of a beetle are shown in the photographs. 
How do structures like whiskers and antennae help organisms? 

• They help organisms stay warm.
• They help organisms eat food quickly.
• They help organisms defend themselves.
• They help organisms get information about their environment.

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Which of the following statements correctly describes the structure that helps this animal survive in its environment? 

• thick layer of blubber
• big furry ears
• a transparent eyelid
• the ability to change colors with the seasons

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Which of the following statements is correct?

• A giraffe has long legs to reach watering holes easily.
• A giraffe has a long tail to help guide him when he runs.
• A giraffe has a long tongue to reach the leaves of tall trees.
• A giraffe has a long mane down its neck to help it run faster.

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Which of the following statements is correct?

• A shark has slimy skin to glide through water.
• A shark has an extremely strong sense of smell to find prey.
• A shark has three extra fins to fight off predators.
• A shark has one set of baby teeth and one set of adult teeth to eat prey.

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Which of the following describes an adaptation of a lizard that helps it survive in its environment?

• A lizard has two sets of lips to help it retain water.
• A lizard has extra big feet to spread out the heat from the ground.
• A lizard has gills to breathe underwater when it floods.
• A lizard has a tail that breaks off so it can run away when grabbed by a predator.

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The spotted fur of a leopard and spotted skin of a leopard gecko are shown in the photographs below. 
How do these body coverings help organisms in their environments?

• They help organisms find food.
• They help organisms look like another animal in its environment.
• They help organisms eat food quickly.
• They help organisms blend into their surroundings. 

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