Respiratory System Grade 9 Quiz No.1

What organ in the respiratory system where exchange of gases takes place?

• Trachea

• Bronchioles

• Bronchi

• Alveoli

Arrange the correct passage of oxygen in the respiratory system.

I. Nose

II. Bronchioles

III. Trachea

IV. Bronchi

V. Alveoli

• I,II,III,V,IV

• I,III,IV,II,V

• II,III,IV,I,V

• I,II,III,IV,V

The following are parts of the Respiratory system EXCEPT.

• Lungs

• Trachea

• Heart

• Alveoli

It is the process of breathing in oxygen.

• exhalation

• inhalation

• respiration

• digestion

What happen to the muscle of the diaphragm when you breath out?

• relaxes

• contracts

• expand

• nothing happen