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प्रश्न
Why the pyramid of energy is always upright? Explain.
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उत्तर
The pyramid of energy represents the total amount of energy consumed by each trophic level in a given food chain. An energy pyramid is always upright because the total amount of energy available for utilization in the layers above is less than the energy available in the lower levels. This happens because according to the 10% law of energy transfer, only 10% of the total energy is transferred from one trophic level to another.
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संबंधित प्रश्न
Describe with examples of pyramids of number and biomass.
Which organisms constitute the last trophic level?
Distinguish between the upright and inverted pyramid of biomass.
In a tree ecosystem the pyramid of numbers is:
Name any two organisms which can occupy more than one trophic level in an ecosystem.
Organisms at a higher trophic level have less energy available. Comment.
The biomass of a standing crop of phytoplankton is 4 kg/m2, which supports a large standing crop of zooplankton having a biomass of 11 kg/m2. This is consumed by small fishes having a biomass of 25 kg/m2, which are then consumed by large fishes with a biomass of 37 kg/m2.
Draw an ecological pyramid indicating the biomass at each stage and also name the trophic levels. Mention whether it is an upright or inverted pyramid.
Give a scientific reason:
The pyramid of energy is always upright.
What does a pyramid of numbers represent?
Which combination can produce an inverted pyramid of numbers?
