Final answer:
Mimicry is the adaptation that describes how one species resembles another species, often for protection from predators or to better catch prey, as in the case of non-poisonous species mimicking poisonous ones for survival advantage.
Step-by-step explanation:
The term used to describe the close resemblance of one plant or animal to another is mimicry. Mimicry is an adaptation where one species evolves to share common outward characteristics with another. A classic example includes a non-poisonous species resembling a poisonous one to avoid predation. This form of mimicry where a harmless species mimics the coloration of a harmful species can be seen in certain wasps and hoverflies. While mimicry helps in predator and prey dynamics, camouflage is another adaptation that allows an organism to blend into its environment to avoid detection by predators. Both mimicry and camouflage are evolutionary strategies that enhance an organism's survival chances in a given environment.