Choose the correct answers from the alternatives given.
Generally the breathing system in birds:

is identical to the human breathing system

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is merely accelerated by the flight muscles

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resembles the positive pressure system of a frog

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requires a flow-through bronchi-lung so constant oxygen absorption can meet the high oxygen demand

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Solution

The correct option is D requires a flow-through bronchi-lung so constant oxygen absorption can meet the high oxygen demand
Unidirectional flow means that air moving through bird lungs is largely 'fresh' air & has a higher oxygen content. So, in bird lungs, more oxygen is available to diffuse into the blood.
So the correct answer is "requires a flow-through bronchi-lung so constant oxygen absorption can meet the high oxygen demand".

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Similar questions

Where in the respiratory system does oxygen, from the air breathed in pass into the blood.

Option 1 : trachea

Option 2 :bronchi

Option 3 : bronchioles

OpOpti 4 : alveoli

K O_{2}

C O_{2}

H_{2} O

4 K O_{2} (s) + 2 H_{2} O (l) \to 3 O_{2} (g) + 4 K O H (s)

C O_{2}

K O H_{s w} + C O_{2} (g) \to K H C O_{3} (s)

K O_{2}

48

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