AP BIOLOGY

ECOLOGY

ENERGY FLOW AND PRIMARY PRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is biomass
A
total number of organisms in the world
B
total mass of organisms in a certain area and/or trophic level
C
total weight of organisms in a certain area and/or trophic level
D
total mass of an individual organism
Explanation: 

Detailed explanation-1: -The biomass is the mass of living biological organisms in a given area or ecosystem at a given time. Biomass can refer to species biomass, which is the mass of one or more species, or to community biomass, which is the mass of all species in the community. It can include microorganisms, plants or animals.

Detailed explanation-2: -Biomass is the energy in living organisms. Autotrophs, the producers in a food web, convert the sun’s energy into biomass. Biomass decreases with each trophic level. There is always more biomass in lower trophic levels than in higher ones.

Detailed explanation-3: -Trophic Levels and Biomass Organisms tend to be larger in size at higher trophic levels, but their smaller numbers result in less biomass. Biomass is the total mass of organisms at a trophic level. The decrease in biomass from lower to higher levels is also represented by the Figure above.

Detailed explanation-4: -Biomass is the mass of living organisms maintained at each trophic level. It can be calculated by multiplying mass of living organisms and their number in an ecosystem.

Detailed explanation-5: -Definition. Biomass refers to the mass of living organisms, including plants, animals, and microorganisms, or, from a biochemical perspective, cellulose, lignin, sugars, fats, and proteins.

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