Autotroph is the modw which make their food ownself with help of sunlight and natural substanceHeterotroph is the mode which depends on others for their nutrient
Those organism which have capable to do photosynthesis reaction and prepare their own food is called autotrophic nutrition .For ex. Plant and bacteria.Those organism which have not capable to do photosynthesis reaction and depend on directly to indirectly from autotrophs is called heterotrophic nutrition.For ex. Animals and fungi
Living organism which make their own food is called as autotrophic and the living organism which cannot prepare their own food and depends on other for their survival is known as heterotrophic