Published by:
CGP EDU Academic Team
Published on: August 11, 2026
Respiration in insects is called direct because:
A
The cells exchange 
directly with the air in the tubes.
directly with the air in the tubes.
B
The tissues exchange 
directly with coelomic fluid.
directly with coelomic fluid.
C
The tissues exchange 
directly with the air outside through body surface.
directly with the air outside through body surface.
D
Tracheal tubes exchange 
directly with the haemocoel which then exchange with tissues.
directly with the haemocoel which then exchange with tissues.
Text Solution
Verified by ExpertsThe correct answer is:
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Insects have a network of tubes (tracheal tubes) to transport atmospheric air within the body. These openings lead to trachea. The cells exchange 
directly with the air in the spiracles present on insects body.
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