1.In text Question - 3,4 ,Pg No- 105 and Exercise Question No- 9
2. How are lungs designed in human beings to maximize the area for the exchange of gases?
3.How is oxygen and carbon dioxide transported in human beings?
4. What are the different ways in which glucose is oxidized to provide energy in various organisms?
5. What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
6. why is the trachea provided with cartilaginous rings?