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NEET UG BIOLOGY MCQ: BREATHING AND EXCHANGE OF GASES
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Hard
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Understanding
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When temperature decreases oxyhaemoglobin curve will become
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Correct option: A
More steep
Option A (More steep) is correct because a decrease in temperature shifts the oxyhaemoglobin dissociation curve to the right, indicating a lower affinity of hemoglobin for oxygen, thus making the curve steeper.
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Select appropriate choice for the blanks A, B and C to complete the given NCERT statement The largest quantity of air that can be expired after a maximum inspiratory effort is Assertion : Most fish when out of water, die of
suffocation.
Reason : Atmospheric air contains far less
oxygen content than the dissolved oxygen in
water. The faster breathing in high fever is due to the