1
MCQ (Single Correct Answer)
Respiration in insects is called direct because
A
the cells exchange $\mathrm{O}_2 / \mathrm{CO}_2$ directly with the air in the tubes
B
the tissues exchange $\mathrm{O}_2 / \mathrm{CO}_2$ directly with coelomic fluid
C
the tissues exchange $\mathrm{O}_2 / \mathrm{CO}_2$ directly with the air outside through body surface
D
tracheal tubes exchange $\mathrm{O}_2 / \mathrm{CO}_2$ directly with the haemocoel which then exchange with tissues
2
MCQ (Single Correct Answer)
Which of the following does not occur during breathing?
A
Brings the air to body temperature
B
Warms up the air
C
Diffusion of gases
D
Cleans up the air
3
MCQ (Single Correct Answer)
A person suffers punctures in his chest cavity in an accident, without any damage to the lungs its effect could be
A
reduced breathing rate
B
rapid increase in breathing rate
C
no change in respiration
D
cessation of breathing
4
MCQ (Single Correct Answer)
It is known that exposure to carbon monoxide is harmful to animals because
A
it reduces $\mathrm{CO}_2$ transport
B
it reduces $\mathrm{O}_2$ transport
C
it increases $\mathrm{CO}_2$ transport
D
it increases $\mathrm{O}_2$ transport
5
MCQ (Single Correct Answer)
Mark the true statement among the following with reference to normal breathing
A
inspiration is a passive process whereas expiration is active
B
inspiration is a active process whereas expiration is passive
C
inspiration and expiration are active processes
D
inspiration and expiration are passive processes