Environment & Ecology · Ecosystem and Ecological Pyramids
Which of the following describes the absolute rule governing the structural orientation of the pyramid of energy in any given ecosystem?
- 1It is consistently inverted in aquatic ecosystems because the producers have a very high turnover rate.
- 2It fluctuates between upright and inverted depending on whether the ecosystem is based on a grazing or parasitic food chain.
- 3It is only upright in terrestrial ecosystems where the standing crop of producers is significantly higher than consumers.
- 4It is always upright because of the continuous loss of energy as metabolic heat at each successive trophic level.✓
Correct answer
It is always upright because of the continuous loss of energy as metabolic heat at each successive trophic level.
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