AP BIOLOGY

Detailed explanation-1: -Producers, also known as autotrophs, make their own food. They make up the first level of every food chain. Autotrophs are usually plants or one-celled organisms.

Detailed explanation-2: -The primary producers are autotrophs, and are most often photosynthetic organisms (such as plants, algae, or cyanobacteria). The organisms that eat the primary producers are called primary consumers.

Detailed explanation-3: -The first organism or first link in the food chain is a producer. Producers are plants; they can be grasses, fruits, trees, vegetables, or ocean algae and other aquatic plants. These organisms are called producers because they produce energy themselves with help from the Sun.

Detailed explanation-4: -At the base of the food chain lie the primary producers. The primary producers are autotrophs and are most often photosynthetic organisms such as plants, algae, or cyanobacteria. The organisms that eat the primary producers are called primary consumers.

Detailed explanation-5: -All food chains start with energy from the sun. This energy is captured by plants. Thus the living part of a food chain always starts with plant life and ends with an animal. Plants are called producers because they are able to use light energy from the sun to produce food (sugar) from carbon dioxide and water.