Pheromones
A) are signaling molecules that are used for olfactory communication between two different species.
B) are only used by invertebrates.
C) require a vomeronasal organ to be detected.
D) are signaling molecules used for olfactory communication between members of the same species.
E) are all of these.

Question

Quizplus · Accepted Answer

Pheromones are signaling molecules that are used for olfactory communication between members of the same species. While they are primarily known to be used in invertebrates, some vertebrates, including mammals, also use pheromones for communication. Detecting pheromones does not necessarily require a vomeronasal organ, although this specialized sense organ is often involved in detecting chemical signals.