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प्रश्न
Answer the following question.
Write any two limitations of ecological pyramids.
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उत्तर
Limitations of ecological pyramids:
- It never takes into account the same species belonging to two or more trophic levels.
- It assumes a simple food chain, which never exists in nature.
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संबंधित प्रश्न
In a food chain, the herbivores are represented by
(A) producers
(B) primary consumers
(C) secondary consumers
(D) decomposers
Explain with the help of labelled diagrams, the difference between an upright pyramid of biomass and an inverted pyramid of biomass.
Give an example of an ecosystem that shows an inverted pyramid of numbers.
Define ecological pyramids.
Pyramid of biomass in terrestrial ecosystem shows sharp decline in
Pyramid of numbers is ______.
Organisms at a higher trophic level have less energy available. Comment.
What are the three types of ecological pyramids? What information is conveyed by each pyramid with regard to structure, function and energy in the ecosystem?
(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.
| In a forest ecosystem, a large population of insect feeds upon a banyan tree. Several small birds feed upon these insects. The small birds are fed upon by big-sized birds. |
- With respect to this ecosystem, draw a pyramid for each biomass and a pyramid of number.
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If 20,000 Kcal energy is available at the level of insects, calculate the amount of energy available at the level of big-sized birds.
