1.

Differentiate between hormones and pheromones.

Answer»
S. No.HormonesPheromones
(i)They are the products of endocrine glands.They are the products of exocrine glands.
(ii)They are released directly into the blood stream.They are released into the external environment.
(iii)They are triggered due to biological changes in the bodyThey are triggered either due to behavioural or developmental process when perceived by other members of the same species



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