Carefully Study the Diagram of the Human Respiratory System With Labels A, B, C and D Select the option- Science

Carefully study the diagram of the human respiratory system with labels A, B, C and D. Select the option which gives correct identification and main function and /or characteristic.

A. (i) Trachea: It is supported by bony rings for conducting inspired air. 

B. (ii) Ribs: When we breathe out, ribs are lifted. 

C. (iii) Alveoli: Thin-walled sac like structures for exchange of gases. 

D. (iv) Diaphragm: It is pulled up when we breathe in.

C. (iii) Alveoli: Thin-walled sac like structures for exchange of gases. 

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CBSE Class 10 Science Sample Paper-2022