Question

What is common between the function of the respiratory system and the digestive system in our body?

• A. All of the above
• B. Their movement can be controlled by our body.
• C. They help in removing waste from our body.
• D. They function with the help of the heart.

Answer 1

The correct option is C They help in removing waste from our body.

The digestive system helps in absorbing nutrients from the food that we eat and removing waste from our body.

Whereas, the respiratory system helps in inhaling oxygen from air and removing carbondioxide.
Carbondixoide is an unwanted substance produced in our body.

Thus, both these organ systems help in removing wastes from our body.