AP BIOLOGY

Detailed explanation-1: -Trophic level of herbivore : Herbivores are primary consumers as they feed on the producers. Hence, herbivores belong to the second trophic level (T2).

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. For example, a grasshopper living in the Everglades is a primary consumer.

Detailed explanation-3: -This level is made up of herbivores: bacteria, fungi, actinomycetes, nematodes, mites, snails, slugs, earthworms, millipedes, sowbugs and worms. Note that some types of mites are carnivores.

Detailed explanation-4: -Introduction to Tertiary Consumer Herbivores are classified as primary consumers; secondary consumers are by definition carnivores. The tertiary consumers could both be exclusively carnivorous, or even omnivorous, and feed on both primary consumers and secondary consumers.

Detailed explanation-5: -A first-level consumer in the food chain is a herbivore that eats producers (plants), and a second-level consumer is a carnivore that eats the first-level herbivore animals. So, an organism that is both first-level and second-level consumer is an omnivore.