AP BIOLOGY

Detailed explanation-1: -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-2: -Level 2: primary consumers The next trophic level in a food chain or an ecological pyramid is trophic level 2. In this level, the organisms occupying this level feed on the primary producers and are called primary consumers. Animals that feed on plant materials are called herbivores.

Detailed explanation-3: -The trophic level of an organism is the number of steps it is from the start of the chain. A food web starts at trophic level 1 with primary producers such as plants, can move to herbivores at level 2, carnivores at level 3 or higher, and typically finish with apex predators at level 4 or 5.

Detailed explanation-4: -Secondary consumers come at trophic level 3. These consist of the carnivores and omnivores. Furthermore, the secondary consumers get at least some of their nutrients from the herbivores. Moreover, this category also includes animals and plants that consume herbivores insects.