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What happens to RBC of human blood at high altitude?(a) Decrease in size(b) Decrease in number(c) Increase in size(d) Increase in numberI got this question in an interview for job.Enquiry is from Mechanism of Breathing-2 topic in chapter Breathing and Exchange of Gases of Biology – Class 11

Answer»

Right answer is (d) Increase in number

Explanation: At HIGH altitude oxygen pressure is lower THUS lungs have to take in more oxygen to FULFILL the demands of the body. Therefore, an increase in RBC helps to transport more oxygen to the body PARTS.



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