AP BIOLOGY

Detailed explanation-1: -Pyramid of Energy: It is a graphic representation of energy per unit area sequence wise in various rising trophic levels with producers at the base and top carnivores at the apex. Length of bar at each level is proportional to the amount of energy present at that level. Maximum energy is found at producer level.

Detailed explanation-2: -Pyramids of number A bar diagram that indicates the relative numbers of organisms at each trophic level in a food chain. The length of each bar gives a measure of the relative numbers.

Detailed explanation-3: -A pyramid of energy shows how much energy is retained in the form of new biomass at each trophic level, while a pyramid of biomass shows how much biomass (the amount of living or organic matter present in an organism) is present in the organisms.

Detailed explanation-4: -Most food chains consist of three or four trophic levels. A typical sequence may be plant, herbivore, carnivore, top carnivore; another sequence is plant, herbivore, parasite of the herbivore, and parasite of the parasite.

Detailed explanation-5: -An energy pyramid shows the flow of energy at each trophic level in an ecosystem. A pyramid shape is used because energy is lost at each trophic level when organisms use it up.