AP BIOLOGY

Detailed explanation-1: -The level in an Ecological pyramid that includes all the organisms that share the same place in a food chain. Autotrophs–The bottom trophic level where all organisms produce their own food, usually by photosynthesis.

Detailed explanation-2: -The bottom and largest level of the pyramid is the producers and contains the largest amount of energy. As you move up the pyramid, through the trophic levels to primary, secondary and tertiary consumers, the amount of energy decreases and the levels become smaller.

Detailed explanation-3: -The third trophic level in the food chain consists of secondary consumers. These consumers gather energy from the primary consumers that they consume because the energy that the primary consumers glean from that which they eat is transferred to the secondary consumers.

Detailed explanation-4: -Trophic Levels. Organisms in food webs are grouped into categories called trophic levels. Roughly speaking, these levels are divided into producers (first trophic level), consumers, and decomposers (last trophic level). Producers. Producers make up the first trophic level.

Detailed explanation-5: -Further trophic levels are numbered subsequently according to how far the organism is along the food chain. Level 1. Plants and algae make their own food and are called producers. Level 2. Herbivores eat plants and are called primary consumers.