Respiration in Humans

Author:Anil Ahlawat
10th Foundation
IMPORTANT

Important Questions on Respiration in Humans

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IMPORTANT
NSO Science Olympiad Workbook Grade 10>Life Processes>Respiration in Humans> Q 1

The given graph shows the changes in the volume of the lungs of a person at rest over a period of 20 seconds.

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How many breaths per minute is the person taking when at rest?
Which two points in the graph (C, D, E or F), shows inspiration and expiration?

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IMPORTANT
NSO Science Olympiad Workbook Grade 10>Life Processes>Respiration in Humans> Q 2

The given graph shows changes in the air pressure of lungs during breathing. What causes the change in air pressure during period X?

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