Answer:
Autotroph: Producer, Heterotroph: Consumer
Step-by-step explanation:
The term "autotroph" is nearly synonymous with producing organisms, or "producers". These organisms produce their own food using a photosynthetic process, effectively starting the energy pyramid by themselves.
(Hint: Autotroph - Automatically creating their own food/source of energy).
The term "heterotroph" is nearly synonymous with consumer organisms, or "consumers". These organisms consume other organisms as food, to absorb energy and carry out the process of their life.
(Hint: Heterotroph - Using different methods to find their food/source of energy).