Biotic Components of Ecosystem

The living organisms in an ecosystem constitute its biotic component and are collectively known as the community. On trophic or nutritional basis, biotic components are divided into two types
i. Autotrophs
Which can synthesis their own complex organic foed from simple inorganic molecules. Green plants and some bacteria fall in this category.
ii. Heterotrophs
Which cannot synthesis complex organic food and dependent on autotrophs or other organisms for their nourishment. Animals, fungi and many bacteria are heterotrophs.