Exams › NEET › Biology

Which two of the following changes (a–d) usually tend to occur in the plain dwellers when they move to high altitudes (3,500 m or more)? (i) Increase in red blood cell size (ii) Increase in red blood cell production (iii) Increased breathing rate (iv) Increase in thrombocyte count Changes occurring are:

1. (a) (ii) and (iii)
2. (b) (iii) and (iv)
3. (c) (i) and (iv)
4. (d) (i) and (ii)

Correct answer: (d) (i) and (ii)

Solution

At high altitudes, the body adapts by increasing red blood cell production to compensate for lower oxygen levels.

Related NEET Biology questions

• Skin is an accessory organ of respiration in
• Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls.
• Name the chronic respiratory disorder caused mainly by cigarette smoking.
• Which of the following are the correct statement for respiration in human?
• Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of
• Reduction in pH of blood will

⚔️ Practice NEET Biology free + battle 1v1 →