LIFE SCIENCE

Detailed explanation-1: -Moving from primary producers to top consumers in a terrestrial food chain, a part of energy is lost in respiration. Therefore, primary producers comprise the greatest biomass in these food chains.

Detailed explanation-2: -The biomass is maximum in a forest ecosystem because of their size and longevity of trees. Forest ecosystem has formed the most massive and complex ecosystems of the earth.

Detailed explanation-3: -In most ecosystems, the largest energy level and largest biomass can be found on the producer level. This occurs because producers obtain their energy from the sun, which is the most readily available resource and hence the most abundant at that level.

Detailed explanation-4: -Pyramid of Biomass – upright The biomass of producers (autotrophs) is at the maximum. The biomass of next trophic level i.e. primary consumers is less than the producers. The biomass of next higher trophic level i.e. secondary consumers is less than the primary consumers.