| 1 |
For gaseous exchange the leaf and young stems have in their epidermis: |
- A. Stomata
- B. Lenticels
- C. Companion cell
- D. Guard cells
|
| 2 |
A cough, mild wheezing, fever chills and shortness of breath are symptoms of: |
- A. Emphysema
- B. Pneumonia
- C. Bronchitis
- D. Asthma
|
| 3 |
In man the correct passage of air is: |
- A. nostrils, nasal, cavit, pharynx, trachea, arynxl, bronchi, bronchioles alveolar,duct, aleoli
- B. nostrils, nasal cavity, Pharynx, larynx , bronchi, trachea , bronchioles , alveolar duct, alveoli
- C. Notrils , nasal, cavity, larynx, pharynx, trachea,bronchioles, alveolar, duct alveoli,
- D. Nasal cavity, nostrils, larynx, pharynx, alveoli , trachea bronchi, bronchioles ,alveolar dict ,
|
| 4 |
How many carciogens are present in cigarette smoke? |
|
| 5 |
The inflamation of bronchi or bronchioles is caled: |
- A. Bronchites
- B. Emphysema
- C. Pneumonia
- D. Chest box
|
| 6 |
The length of trachea is: |
- A. 10 cm
- B. 12 cm
- C. 22 cm
- D. 20 cm
|
| 7 |
Most of the gaseous exchange in a leaf occurs through. |
- A. Stomata
- B. General surface
- C. Cuticle
- D. lenticels
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| 8 |
Amount of oxygen in expired air is: |
- A. 21%
- B. 16%
- C. 0.04%
- D. 4%
|
| 9 |
Where does the gaseous exchange occur in humans: |
- A. Pharynx
- B. Larynx
- C. Trachea
- D. Epiglottis
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| 10 |
What percentage of oxygen inhaled form air during breathing? |
- A. 21%
- B. 22%
- C. 23%
- D. 24%
|