1.Autotrophsare organisms that can produce their own food from the substances available in their surroundings using light (photosynthesis) or chemical energy (chemosynthesis).
2.Autotrophs use inorganic materials like carbon dioxide, water, Sunlight to create their own food.
3.Autotrophs use colouring pigments like chlorophyll in the process of photosynthesis to produce food.
4.EXAMPLESAutotrophs are mainly green plants
5.Autotrophic nutrition is influenced by biochemical catalytic substances, water, humidity, temperature, etc.
1.Heterotroph are the organisms which are dependent on other organisms for their food.
2.Heterotrophs procure food by feeding on other organisms directly or indirectly.
3.Heterotrophs don’t need any coloring pigments to obtain food.
4.Heterotrophs are also called as parasites and some examples are animals, birds, fungi, some Protozoa, etc.
5.Heterotrophic nutrition is influenced by digestive enzymes, Nature of food what is vegetarian or non-vegetarian, etc.