AP BIOLOGY

Detailed explanation-1: -Producers such as algae and plants are the organisms that would most likely be found at the bottom of biomass pyramid because producers are the organisms that make their own food from using the sun energy and feed other organisms present in that ecosystem.

Detailed explanation-2: -Plants or other photosynthetic organisms (autotrophs) are found on the first trophic level, at the bottom of the pyramid. The next level will be the herbivores, and then the carnivores that eat the herbivores.

Detailed explanation-3: -As you probably know, the organisms at the base of the food chain are photosynthetic; plants on land and phytoplankton (algae) in the oceans.

Detailed explanation-4: -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-5: -Since matter and energy are directionally proportional (as the amount of energy increases, the amount of matter/biomass increases), the producer level has the greatest biomass and the tertiary consumers have the least biomass.