What type of organism is the first organism in an energy pyramid or food chain

Answer 1

The first organism in an energy pyramid or food chain is typically a primary producer, which is usually a type of plant or photosynthetic organism. These organisms, such as grasses, algae, and some bacteria, capture energy from the sun through photosynthesis and convert it into chemical energy in the form of glucose. Primary producers form the base of the food chain, providing energy for the primary consumers (herbivores) that feed on them.