What type of ecological pyramid would be obtained with the following data?Secondary consumer: 120 gP

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Question

What type of ecological pyramid would be obtained with the following data?Secondary consumer: 120 gPrimary consumer: 60 gPrimary producer: 10 g

Accepted Answer

Correct Answer: A — Inverted pyramid of biomassStep-by-step Solution:The data given represents standing crop biomass at each trophic level:Primary producer: 10 g < Primary consumer: 60 g < Secondary consumer: 120 gSince biomass increases at higher trophic levels (instead of decreasing), this is an inverted pyramid of biomass. This pattern is typically seen in aquatic ecosystems, where phytoplankton (producers) have a very small standing crop biomass at any given time because they reproduce very rapidly and are consumed quickly, but the larger-bodied zooplankton and fish at higher trophic levels accumulate greater total biomass.Why other options are incorrect:Option B (Pyramid of energy): The pyramid of energy is always upright in all ecosystems, as energy always decreases at successive trophic levels due to the 10% law. Option C (Upright pyramid of biomass): This would show decreasing biomass at higher trophic levels (producer > primary consumer > secondary consumer), which is the opposite of the given data. Option D (Upright pyramid of numbers): Refers to count of individual organisms, not biomass; also unrelated to the given data.Key Concept: Pyramid of biomass can be upright (most terrestrial ecosystems: grassland, forest) or inverted (aquatic ecosystems: sea/lake, where phytoplankton standing crop < zooplankton < fish). Pyramid of energy is always upright. Pyramid of numbers can be upright, inverted, or spindle-shaped.

What type of ecological pyramid would be obtained with the following data?Secondary consumer: 120 gPrimary consumer: 60 gPrimary producer: 10 g

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What type of ecological pyramid would be obtained with the following data?Secondary consumer: 120 gPrimary consumer: 60 gPrimary producer: 10 g

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