What are Factors that influence primary production in different zones of oceans and lakes Solution Organisms that synthesise the organic elements of life from the inorganic molecules are known as \"primary producers.\" Plants, certain bacteria and algae are autotrophs (they feed themselves by photosynthesis). Photosynthesis is a process through which plants use sun energy for the production of organic material. Plants utilise necessary amount of sunlight for photosynthesis. The major factors affecting the primary production in different zones of oceans and lakes are, 1). Availability of Sun light 2). Mineral nutrients In contrast, the terrestrial plants have the limitations of water supply and uniform temperature. As the aquatic plants and organisms live in the water itself, they do not suffer from water scarcity. Also, temperature is uniform due to the heat capacity of water..