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प्रश्न
What are the shortcomings of ecological pyramids in the study of ecosystems?
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उत्तर
The shortcomings of ecological pyramids in ecosystem study are that they assume a simple food chain and do not account for complex food webs. They also do not consider species that may belong to two or more trophic levels at the same time, and they exclude decomposers despite their important role in ecosystems. Thus, ecological pyramids provide only a limited view of trophic structure and energy flow in ecosystems.
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संबंधित प्रश्न
Give diagrammatic representation of pyramid of numbers.
“It is often said that the pyramid of energy is always upright. On the other hand, the pyramid of biomass can be both upright and inverted.” Explain with the help if examples and sketches.
Why the pyramid of energy is always upright? Explain.
Distinguish between upright and inverted pyramids.
Distinguish between a food chain and a food web.
In a food chain, the herbivores are represented by
(A) producers
(B) primary consumers
(C) secondary consumers
(D) decomposers
Explain energy pyramid
With reference to the levels of an organisation, differentiate between living organisms and non-living objects.
Write any two limitations of ecological pyramids.
'The pyramid of energy is always upright.' Explain
Explain with the help of labelled diagrams, the difference between an upright pyramid of biomass and an inverted pyramid of biomass.
Secondary consumers are __________.
Pyramid of energy in grassland and pond ecosystem is always ______.
Which one of the following is not used for construction of ecological pyramids?
Which of the following organism form the decomposers?
In a pyramid of biomass, if the total dry weight (kgm-2) of primary produces is about 809, it well increases at tertiary consumer level up to ______.
Pyramid of biomass in terrestrial ecosystem shows sharp decline in
Which of the following statements is not correct?
What does the base tier of the ecological pyramid represent?
Name any two organisms which can occupy more than one trophic level in an ecosystem.
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?
Give a scientific reason:
The pyramid of energy is always upright.
| 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.
