1. Gaseous exchange in frog occurs through
A. Lungs
B. Skin
C. Buccal cavity
D. All
2. Choose the correct statement about inhalation in frog
A. Nostrils close after the entry of air
B. Raised floor of buccal cavity
C. Air pushed into lungs
D. All
3. Birds lungs have thin walled ducts called ______instead of _______
A. Parabronchi, alveoli
B. Alveoli, parabronchi
C. Bronchi, bronchioles
D. Bronchioles, bronchi
4. Choose the correct statement about respiration in birds
A. Blood flow and air flow in same direction
B. Stale air remains in parabronchi
C. Counter current exchange increases oxygen entering blood
D. All
5. The lungs of birds have also developed extensions called ________ and they reach to all parts and to some bones also.
A. Parabronchi
B. Alveoli
C. Bronchus
D. Air sacs
6. Most birds have ______air sacs
A. 4
B. 5
C. 7
D. 9
7. Mucous membrane in nasal cavity makes the passing air
A. Moist
B. Warm
C. Filtered
D. All
8. In man Each nasal cavity is subdivided into ______passage ways
A. 1
B. 2
C. 3
D. 4
9. Larynx is also called
A. Trachea
B. Epiglottis
C. Voice box
D. Vocal cord
10. _____is cartilaginous structure surrounding upper end of _______
A. Larynx, trachea
B. Trachea, larynx
C. Vocal cord, trachea
D. Trachea, vocal cord
11. Voice box is a
A. Cartilaginous structure
B. Bony structure
C. Fibrous structure
D. Mucoid structure
12. Mucous membrane is stretched in glottis across _______fibrous band/s.
A. One
B. Two
C. Three
D. Four
13. Vocal cords are two thin edged ______structures
A. Fibrous structure
B. Bony structure
C. Cartilaginous structure
D. Mucoid structure
14. _____ or wind pipe lies ventral to esophagus extending to thorax and dividing into right and left______
A. Trachea, bronchi
B. Trachea, alveoli
C. Larynx, bronchi
D. Larynx, alveoli
15. Wall of trachea has ________shaped cartilage rings which prevent it from collapsing
A. C
B. D
C. O
D. Q
16. Bronchioles have diameter of
A. 7cm
B. 7mm
C. 1cm
D. 1mm
17. Bronchioles have _____cartilage
A. C shaped
B. D shaped
C. Irregularly distributed plates of
D. No
18. Bronchioles are made of
A. Longitudinal Skeletal muscle
B. Circular Smooth muscle
C. Circular skeletal muscle
D. Longitudinal smooth muscle
19. ______is the functional unit of lungs
A. Alveoli
B. Bronchi
C. Bronchioles
D. Air sac
20. Air sac consists of single layered microscopic structures called
A. Alveoli
B. Bronchi
C. Bronchioles
D. Blood capillaries