Autotrophs :- The ability of preparing there own food using water and mineral salts, sunlight, carbondioxide, oxygen is referred as autotrophs.
Heterotrophs :- the ability of depending on others for food is reffered as heterotrophs
Parasites :-organisms that depend on another organisms for food is called as parasites
saprophytes :- animals that depend on dead organisms n matter as source of food is called as saprophytes
symbiosis- the mutual relation of organisms that depend on each other for living is called as symbiosis
hope it helped you :)