IAC White Set Science Bee Practice Test 2026 - Free Science Bee Practice Questions and Study Guide

Organisms that produce their own food are called producers, or autotrophs. They capture energy from sunlight (photosynthesis) or from chemical reactions (chemosynthesis) to make organic molecules, providing the base energy source for all other organisms in an ecosystem.

Consumers, including herbivores, rely on preformed organic nutrients made by producers, not self-produced food. Decomposers break down dead material and recycle nutrients, rather than creating new organic matter themselves.