Which part of the human respiratory system allows air to go in and out of the body?

• A

• B

• C

• D

Which part of the human respiratory system is connected to the smaller air tubes?

• A

• B

• C

• D

Which part of the human respiratory system allows the exchange of gases?

• A

• B

• C

• D

What is the name of labeled C?

• Nose

• Lungs

• Wind pipe

• Air tubes

What is the name of labeled B?

• Nose

• Lungs

• Wind pipe

• Air tubes

What is the name of labeled A?

• Nose

• Lungs

• Wind pipe

• Air tubes

The tube connecting the wind pipe and lungs is____.

• Nose

• Lungs

• Wind pipe

• Air tubes

The gas we breathe out is _____

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

The gas we breathe in is rich in____.

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

Xylem is also called_______ tubes.

• Food-carrying

• water-carrying

• air-carrying

• mineral-carrying