Gaseous Exchange
The inner cells of leaves are called
mesophyll
guard cells
stomata
epidermis
mesophyll
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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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