NEET Biology question
Read the following four statements (i)-(iv) with certain mistakes in two of them. (i) A water breather expends much more energy in ventilating its respiratory surface than an air-breathing one. (ii) Lungs become empty after forceful expiration. (iii) Exchange of gases in the lungs is interrupted during expiration. (iv) Respiratory movements are controlled by CO concentration of arterial blood. Which of the above two statements have mistakes?
Solution
Statement (i) is correct since a denser, more viscous water medium does demand more energy for ventilation than air, and statement (iv) is correct since arterial CO does control respiratory movements, but statement (ii) is wrong because the residual volume
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