AP BIOLOGY

Detailed explanation-1: -Pheromones are chemical signals that have evolved for communication between members of the same species. A pheromone signal elicits a specific reaction in the receiver, for example, a stereotyped behavior (releaser effect) or a developmental process (primer effect). Some pheromones can have both effects.

Detailed explanation-2: -Pheromones are chemicals produced as messengers that affect the behavior of other individuals of insects or other animals. They are usually wind borne but may be placed on soil, vegetation or various items.

Detailed explanation-3: -For example, when a rabbit leaves a scent to convey a message to another rabbit, the scent is a pheromone. However, the coyote that follows the same rabbit’s scent cannot read the chemical message. To the coyote, the scent is an odor, not a pheromone.

Detailed explanation-4: -the use of odorants and other substances (see external chemical messenger) to transmit information between individuals. Many nonhuman animals have specialized scent glands for scent production and specialized behavior for depositing scents.