AP BIOLOGY

Detailed explanation-1: -trophic pyramid, the basic structure of interaction in all biological communities characterized by the manner in which food energy is passed from one trophic level to the next along the food chain.

Detailed explanation-2: -As the trophic levels go up, it tapers towards the peak. This pyramid shape depicts the biomass in each trophic level. Biomass is the amount of living or organic matter in an organism. The base shows the largest biomass and then diminishes in amount as it moves up to the apex.

Detailed explanation-3: -Trophic levels can be represented by numbers, starting at level 1 with plants. Further trophic levels are numbered subsequently according to how far the organism is along the food chain. Plants and algae make their own food and are called producers. Herbivores eat plants and are called primary consumers.

Detailed explanation-4: -A pyramid of numbers shows the number of individual organisms involved at each trophic level in an ecosystem. The pyramids are not necessarily upright. In some ecosystems there can be more primary consumers than producers.