AP BIOLOGY

Detailed explanation-1: -The first order consumers or primary consumers are always herbivores since they feed on the producers directly. Autotrophs are organisms that produce food using nutrients from the soil and sunlight and are also called producers.

Detailed explanation-2: -Primary consumers make up the second trophic level. They are also called herbivores. They eat primary producers-plants or algae-and nothing else.

Detailed explanation-3: -First-level consumers, also known as primary consumers, eat producers such as plants, algae and bacteria. Producers comprise the first trophic level. Herbivores, the first-level consumers, occupy the second trophic level. First-level consumers do not eat other consumers, only plants or other producers.

Detailed explanation-4: -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. Primary consumers are usually herbivores, plant-eaters, though they may be algae eaters or bacteria eaters.

Detailed explanation-5: -Producers (or autotrophs)-bring energy from nonliving sources into the community. Primary consumers-eat the producers, which makes them herbivores in most communities. Secondary consumers-eat the primary consumers, which makes them carnivores. Tertiary consumers-eat the secondary consumers, they may be.