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Biology
Breathing and Exchange of Gases
CBSE
Class 11
Biology
Class 11 - Biology
Breathing and Exchange of Gases
MCQ
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1.
Respiration in insects is called direct because
a.
The cells exchange O2 /CO2 directly with the air in the tubes
b.
The tissues exchange O2 /CO2 directly with coelomic fluid
c.
The tissues exchange O2 /CO2 directly with the air outside through body surface
d.
Tracheal tubes exchange O2 /CO2 directly with the haemocoel which then exchange with tissues.
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