10th Class Biology Solved MCQS
Where does the gaseous exchange occur in humans?
Bronchi
Trachea
Alveoli
Pharynx
In plants, gaseous exchange takes place as:
CO2 and O2 both are absorbed
CO2 is absorbed and O2 is removed
CO2 and O2 both are removed
CO2 is removed and O2 is absorbed
The number of lobes in right lung is:
4
3
1
2
Where does the gaseous exchange occur in humans:
Larynx
Trachea
Pharynx
Epiglottis
C-Shaped cartilaginous rings are present in the wall of.
Alveoli
Bronchi
Trachea
Bronchioles
Most of the gaseous exchange in a leaf occurs through:
Lenticels
Stomata
Cuticle
General surface
Amount of nitrogen in expired air is:
70%
79%
4%
80%
The percentage of oxygen from air which we inspired is:
21%
15%
25%
28%
For gaseous exchange the leaf and young stems have in their epidermis:
Guard cells
Lenticels
Stomata
Companion cell
The correct list of respiratory disorders is;
Asthma , blood , cancer , emphysema, cholera
Asthma , penumonia , heamophlia , typhoid,
Asthma , cholera, emphysema , malaria
Asthma, emphysema. pneumonia , bronchitis
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