Which is the primary site for exchange of gases ?

which of the following is the primary site of exchange of gases in the human lungs?

Assertion : Alveoli are the primary sites for exchange of gases. Reason : All factors in our body are favourable for diffusion of O_(2) from alveoli to tissues and that of CO_(2) from tissues to alveoli.

What is the principle of exchange of gases ?

What is the principle of exchange of gases?

Name the primary site of exchange of gases in our body?

Name the primary site of exchange of gases in our body.

Name the primary site of exchange of gases in our body?

Name the primary site of exchange of gases in our body?

Name the primary site of exchange of gases in our body?