Exchange Of Gases

When concentration in blood increases, breathing becomes faster and deeper. The effect of increased is to decrease the affinity of haemoglobin for . Thus due to Bohr's effect the released in respiring tissue accelerates the delivery of oxygen by faster and deeper breathing.

Book lungs are respiratory structures is arachnida (scorpion spider, etc).

Transport of carbon dioxide by blood is much easier than that of oxygen due to high solubility of in water. of is dissolved in plasma, as carbaminohaemoglobin and as bicarbonates. Major fraction of carbon dioxide released during cellular respiration is transported by blood in the form of sodium bicarbonate in plasma.

Answer (c) Simple diffusion

The correct option is (c): Residual volume.