The correct answer is 1. Organisms growing on the surface of solid culture media.
Colony morphology descriptions are produced by analyzing the physical characteristics of organisms growing on the surface of solid culture media. These characteristics include the size, shape, color, texture, elevation, and any other visible features of the colonies formed by the organisms.
By observing and analyzing colony morphology, scientists and microbiologists can gather valuable information about the identity, growth patterns, and potential properties of the organisms present in the culture.