Which one of the following organs is used for respiration by a tadpole?

In humans, during respiration, oxygen is taken in and carbon dioxide is given out. Which one of the following organ is a part of the respiratory system?

To clean muddy water we use filter papers. An organ in our body performs a similar function. It filters the blood and waste materials. Name the organ.

Which one of the following organs is bean shaped?

The function of hair inside our nose is

The two lower chambers of the heart are called

Blood in our body is filtered by the

Our stomach expands when the food enters and contracts when it goes out. Thus the stomach can expand and contract. This is possible because our stomach is made of

We breathe in oxygen from air and breathe out carbon dioxide. Where does this carbon dioxide come from?

Our stomach is located