Increase in $C O_{2}$ concentration shall cause.

Slower and shallower breathing

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Slower and deeper breathing

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Faster and deeper breathing

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No effect on breathing

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Solution

The correct option is C Faster and deeper breathing
The effect of rising carbon dioxide concentration is due to a decrease in the affinity of haemoglobin for oxygen. Thus, the carbon dioxide released in the tissues accelerates the delivery of oxygen (called Bohr effect), due to which breathing becomes faster and deeper. So, the correct option is C.

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