EVERYDAY SCIENCE

Detailed explanation-1: -The rate at which radiant energy is captured by the producers for the synthesis of organic compounds through photosynthesis is called primary productivity. Primary productivity converts radiant energy into the organic compound through photosynthesis or chemosynthesis by the organism (commonly called primary producers).

Detailed explanation-2: -However, the primary producers can only convert approximately 10% of that available radiant energy into chemical energy that other trophic levels can consume. This is because useable energy is lost through the system, often as heat, to support and maintain each trophic level.

Detailed explanation-3: -primary productivity, in ecology, the rate at which energy is converted to organic substances by photosynthetic producers (photoautotrophs), which obtain energy and nutrients by harnessing sunlight, and chemosynthetic producers (chemoautotrophs), which obtain chemical energy through oxidation.

Detailed explanation-4: -Definition. The total amount of carbon compounds produced by photosynthesis of plants in an ecosystem in a given period of time. Source. Glossary.

Detailed explanation-5: -Gross primary productivity, or GPP, is the rate at which solar energy is captured in sugar molecules during photosynthesis (energy captured per unit area per unit time). Producers such as plants use some of this energy for metabolism/cellular respiration and some for growth (building tissues).