Answer: True
A food chain is a linear sequence of transfer of energy in the form of food when one organism is consumed by another organism in an ecosystem. A food web is an interconnection of food chains.
Producers are the primary source of energy in a food chain or food web. Producers are autotrotrophs which means they syntheize their own food by photosynthesis. These includes plants ranging from phytoplanktons to large trees. They are abundantly present in every ecosystem to meet the food requirements of higher trophic levels such as primary consumers like rabbit, deer and other herbivores.