(A) Digestion (X)
(B) Respiration ()
(C) Excretion (X)
(D) Secretion (X)
Answers: Trachea in insects are the organ of Respiration.
(A) Digestion (X)
(B) Respiration ()
(C) Excretion (X)
(D) Secretion (X)
Answers: Trachea in insects are the organ of Respiration.
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