Which of the following is correct for the Pheromones?

1. ABiochemicals found within the brain which effect a person's behaviour
2. BBiochemials which play an important role in transmitting information from neuron to neuron
3. CChemical messengers found in the Central Nervous System
4. DChemical substances emitted by the person into the environment affecting the behaviour of others

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Correct answer: D. Chemical substances emitted by the person into the environment affecting the behaviour of others

Explanation

Pheromones are chemicals released into the environment that affect the behaviour or physiology of other members of the species.