Gaseous Exchange
During the night when there is no photosynthesis, the leaf cells get oxygen from
mesophyll cell
epidermal cell
cuticle cell
environment
environment
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The disorder in which, bronchi are inflamed and more mucus production occurs isA. emphysema
B. asthma
C. pneumonia
D. bronchitis
The epiglottis, a flap of tissues covers the
A. pharynx
B. nostrils
C. nasal cavity
D. glottis
The amount of carbon dioxide (CO2) present in the inspired air is
A. 0.0006
B. 0.0004
C. 0.04
D. 0.06
A human breath per minute is
A. 16-30 times
B. 16-20 times
C. 15-20 times
D. 15-18 times
The respiratory disorder in which cells division takes place without any control and causes tumors is called
A. emphysema
B. lung cancer
C. bronchi cancer
D. bronchioles cancer
The percentage of respiratory disorders is high in Pakistan due to more concentration of air
A. chemicals
B. components
C. gases
D. pollution
How many types of bronchitis are?
A. 1
B. 2
C. 3
D. 4
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