Class 11
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Biology
Breathing and Exchange of Gases
NCERT Solutions
NCERT Solutions
Breathing and Exchange of Gases
14 Solutions
Q1
Exercises
Define vital capacity. What is its significance?
Q2
Exercises
State the volume of air remaining in the lungs after a normal breathing.
Q3
Exercises
Diffusion of gases occurs in the alveolar region only and not in the other parts of respiratory system. Why?
Q4
Exercises
What are the major transport mechanisms for
C
O
2
CO_2
C
O
2
? Explain.
Q5
Exercises
What will be the
p
O
2
pO_2
p
O
2
and
p
C
O
2
pCO_2
pC
O
2
in the atmospheric air compared to those in the alveolar air ?
(i)
p
O
2
pO_2
p
O
2
lesser,
p
C
O
2
pCO_2
pC
O
2
higher
(ii)
p
O
2
pO_2
p
O
2
higher,
p
C
O
2
pCO_2
pC
O
2
lesser
(iii)
p
O
2
pO_2
p
O
2
higher,
p
C
O
2
pCO_2
pC
O
2
higher
(iv)
p
O
2
pO_2
p
O
2
lesser,
p
C
O
2
pCO_2
pC
O
2
lesser
Q6
Exercises
Explain the process of inspiration under normal conditions.
Q7
Exercises
How is respiration regulated?
Q8
Exercises
What is the effect of
p
C
O
2
pCO_2
pC
O
2
on oxygen transport?
Q9
Exercises
What happens to the respiratory process in a man going up a hill?
Q10
Exercises
What is the site of gaseous exchange in an insect?
Q11
Exercises
Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?
Q12
Exercises
Have you heard about hypoxia? Try to gather information about it, and discuss with your friends.
Q13
Exercises
Distinguish between
(a)
IRV and ERV
(b)
Inspiratory capacity and Expiratory capacity.
(c)
Vital capacity and Total lung capacity.
Q14
Exercises
What is Tidal volume? Find out the Tidal volume (approximate value) for a healthy human in an hour.
More from this chapter
Chapter overview
Notes
Important Points
Practice Questions
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