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Which two of the following changes (a-d) usually tend to occur in the plain dwellers when they move to high altitudes (3500 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:
Options
(a) (ii) and (iii)
(b) (iii) and (iv)
(c) (i) and (iv)
(d) (i) and (ii)
Correct Answer:
(ii) and (iii)
Explanation:
At high altitude, the body undergoes numerous changes in order to increase oxygen delivery to cells and improve the efficiency of oxygen usage. The early changes include increased breathing rate and increased red blood cell production.
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Topics: Human Physiology Systems
(35)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The loss of water in C plants compared to C plants for the same amount of
- Select the wrong statement Anisogametes
- The first action spectrum of photosynthesis which was described by Engelmann
- Which one of the following are analogous structures?
- One of endangered species of Indian medicinal plants is that of
Topics: Human Physiology Systems (35)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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