What are the necessary conditions for autotrophic nutrition and what are its by-products?

AcademicBiologyNCERTClass 10

The conditions necessary for autotrophic nutrition are:



 carbon dioxide


The byproducts of photosynthesis performed by autotrophic organisms are carbohydrates (starch) and oxygen.

Organisms that make their own food from carbon dioxide and water are known as autotrophs.

Example: Green Plants.

The reaction of photosynthesis process is commonly written as:

6CO2     +                   6H2O           SunLight ------>      C6H12O6         +    6O2

Carbon dioxide         Water       Chlorophyll             Carbohydrates      Oxygen

During the process of photosynthesis, six carbon dioxide molecules (reactant) and six water molecules (reactant), are converted into one sugar molecule (carbohydrate) (product) and six oxygen molecules (byproduct) in the presence of light energy (sunlight) captured by chlorophyll.

Updated on 10-Oct-2022 13:19:00