AP BIOLOGY

Detailed explanation-1: -Pheromones. Pheromones are chemical substances that are created and emitted by organisms as odorants-often as oils or sweat-into the environment that may influence the behavior or physiology of other members of their species. This is particularly the case for mammals or insects.

Detailed explanation-2: -A Pheromone is a chemical produced by a given species that affects the behavior or physiology of the same species – first coined by Karlson and M. Luscher in 1959. Early work was in insects, but scientists soon discovered that pheromones operate in other animals, including mammals.

Detailed explanation-3: -Pheromones are typically secreted by specialized glands or tissues. For example, female moths have a pheromone gland at the end of their abdomen. Rodents have a wide variety of skin glands as well as large and small pheromone molecules delivered in their urine.

Detailed explanation-4: -A pheromone is a species-specific chemical signal that incites a response in another organism. Pheromones are involved in a wide variety of behaviors, including mate selection, food acquisition, alarm responses, territory marking, predation defenses, and other social behaviors indicating social status.

Detailed explanation-5: -From the most gregarious to the most solitary, all animals have to coordinate their activity with other members of their species if they are to survive and reproduce. This requires some form of communication, which for the majority of animals involves the use of chemical signals, known as pheromones.