What are the necessary conditions for autotrophic nutrition and what are its byproducts?

(N/A) Autotrophic nutrition occurs through the process of photosynthesis.
The necessary conditions for autotrophic nutrition are:
$1$. Presence of chlorophyll pigment.
$2$. Availability of sunlight.
$3$. Availability of carbon dioxide $(CO_2)$.
$4$. Availability of water $(H_2O)$.
The byproducts of photosynthesis are carbohydrates (glucose,$C_6H_{12}O_6$) and oxygen $(O_2)$.
The chemical equation for the process is:
$6CO_2 + 6H_2O \xrightarrow[\text{Chlorophyll}]{\text{Sunlight}} C_6H_{12}O_6 + 6O_2$