A) produced by the environment
B) produced by the body and released outside
C) taken from outside into the body
D) it is not a hormone but a pigment
Correct Answer: B
Solution :
Pheromones are chemical messengers used for communication between individuals of the same species, serve as sex attractant among animals, eg, female silk moth (Bombyx mori) produces a sex pheromone called bombykol in a gland associated with the reproductive system and male antennae possess numerous sensory receptors specific for bombykol. These receptors are extra ordinarily sensitive, enabling the male to respond behaviourally to concentration of bombykol. Pheromones are also known as ectohormones.
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