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प्रश्न
“The pyramid of biomass is not always upright.” Explain the statement.
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उत्तर
(i) The pyramid of biomass in sea is generally inverted because the biomass of fishes far exceeds than that of phytoplanktons.
(ii) The pyramid of biomass in terrestrial ecosystems are upright because producers are more in biomass than in herbivores, herbivores are more in biomass than in carnivores.
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संबंधित प्रश्न
Give diagrammatic representation of pyramid of numbers.
In a food chain, the herbivores are represented by
(A) producers
(B) primary consumers
(C) secondary consumers
(D) decomposers
Which ecosystem has the maximum biomass?
Pyramid of energy in grassland and pond ecosystem is always ______.
Name any two organisms which can occupy more than one trophic level in an ecosystem.
What are the shortcomings of ecological pyramids in the study of ecosystems?
(a) Draw a pyramid of numbers where a large number of insects are feeding on the leaves of a tree. What is the shape of this pyramid?
(b) Will the pyramid of energy be also of the same shape in this situation? Give a reason for your response.
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.
Describe pyramid of energy with the help of diagram.
