EASY
9th ICSE
IMPORTANT
Earn 100

CO2 is not produced in anaerobic respiration in the human body.

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Important Questions on The Respiratory System

EASY
9th ICSE
IMPORTANT
Breathing and gaseous transport are the same thing.
EASY
9th ICSE
IMPORTANT
CO2 is transported to the lungs by the blood in two forms as bicarbonate and as carbaminohaemoglobin.
MEDIUM
9th ICSE
IMPORTANT
Tissue respiration means chemical changes occurring inside the cells.
MEDIUM
9th ICSE
IMPORTANT

Match the items in the column-I with those in the column-II

Column-I Column-II
A. Nasal Chamber. (I) Production of voice
B. Epiglottis (ii) C-Shaped ring
C. Air-Sacs (iii) Warm air
D. Lungs (iv) Drives mucus
E. Larynx (v) Closing windpipe during swallowing
F. Trachea (vi) Network of capillaries
G. Cilia (vii) Sponge and elastic
EASY
9th ICSE
IMPORTANT

How do the ribs contribute to breathing?

MEDIUM
9th ICSE
IMPORTANT

How does the diaphragm contribute to breathing?

HARD
9th ICSE
IMPORTANT

Match the lung capacities in column I with the quantities given in column II:

Column I Column II
A. Residual air (i) 4500ml
B. Vital capacity (ii) 6000ml
C. Total lung capacity (iii) 1500ml
D. Dead air space (iv) 150 ml
EASY
9th ICSE
IMPORTANT
Mention any two points of differences in the of quality of inspired and expired air.