Animal Structures and Their Functions

Animals have a respiratory system that ___.

• takes in carbon dioxide and releases oxygen.

• takes in oxygen and releases carbon dioxide.

• pumps blood to the body.

• keeps the animals warm

Which structure helps regulate body temperature? Choose the best answer.

• Skin and fur

• Heart and lungs

• Mouth and feet

• Bones and brain

What pumps blood to the body?

• Brain

• Feet

• Heart

• Skin

Which type of feet are best for swimming?

• paws

• sticky

• webbed

• 4 toed

True or False: Cats have a prehensile upper lip.

• True

• False

Choose 2. What are two specialized structures ducks have?

• Feathers to keep warm and for flight

• 4 toed feet for grasping branches

• A flat bill to spoon food

• A pointy beak to get bugs from bark

True or False: The shape and size of a bird’s beak is related to the food that bird eats.

• True

• False

What type of teeth are good for grinding tough plants?

• Sharp, pointy teeth

• Flat teeth

• Only upper teeth

• No teeth are needed, only digestive enzymes

The heart is part of the ​ ​​ (a)   system.

• circulatory
• grasping
• respiratory
• Sticking to surfaces
• prodiding a sturdy base of support

4 toed feet are good for​ (a)  

• grasping
• respiratory
• sticking to surfaces
• providing a sturdy base of support
• circulatory