AP BIOLOGY

Detailed explanation-1: -Throughout the animal kingdom, from the simplest creature to the most complex, some form of communication takes place. Although most of us think of it in terms of sound, actually there are four methods of communication-auditory (sound), visual (sight), tactile (touch), and chemical (smell and taste).

Detailed explanation-2: -Structures such as the long ornamented tail of the peacock, the roaring sounds of howler monkeys, audible kilometers away, and the pheromone trails laid by ants to guide their nestmates to resources are each examples of animal signals (Figure 1).

Detailed explanation-3: -Sensory Processing in Animals. The sensory system detects signals from the outside environment and communicates it to the body via the nervous system. The sensory system relies on specialized sensory receptor cells that transduce external stimuli into changes in membrane potentials.