Haryana PMT Haryana PMT Solved Paper-2009

  • question_answer Which of the following is not a defence evolved by a prey to avoid predators?

    A)  Ejection of noxious chemicals

    B)  Possession of toxic hairs

    C)  Mimicry of inedible objects

    D)  Secretion of pheromones

    Correct Answer: A

    Solution :

    Pheromones are the chemicals, which when released by an animal in its surrounding, affect the behaviour and development of other individuals of the same species and act as a chemical messenger among them. These are meant for sexual attraction, recognition of area and individuals, alarming and communication, aggressiveness, etc but not for a defence mechanism of prey to avoid predator.


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