What is an autotrope?

Answer 1

An autotroph is a classification of living organism, it includes all organisms that synthesize complex organic molecules using the energy from light or simple inorganic chemistry. Simplifying things somewhat, a plant. (In reference to the theme song of "The Big Bang Theory" and the line when "autotrophs began to drool" it refers to the transition to heterotrophs which ingest autotrophs for food, i.e. the first animals arising from plants.)