Respiration in aerial medium

Which organ excretes carbon dioxide?

• Lungs
• Liver
• Heart
• Kidney

What is the organ "x"

• Heart
• Lungs
• Diaphragm
• Trachea

Small openings on the side of the cockroaches body is called as

• Trachea

• Spiracles

• Glucose

• None

Breathing in oxygen is

Breathing out carbon dioxide is

It is a tiny air sacs and looks like grape

• blood capillary

• lung

• alveoli

• bronchus

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body
• to bring oxygen to the body
• to break down food and absorb nutrients
• to remove oxygen from the body and deliver carbon dioxide

Blood rich in _____________ flows to the body cells. Blood rich in __________ flows to the lungs.

_______________________ is the exchange of gases across a respiratory surface.

which of the following organs is used by frogs for breathing?

• skin
• heart
• liver
• eyes