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प्रश्न
Pyramid of numbers is ______.
पर्याय
Always upright
Always inverted
Either upright or inverted
Neither upright nor inverted
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उत्तर
Pyramid of numbers is either upright or inverted.
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संबंधित प्रश्न
“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 a food chain and a food web.
Which organisms constitute the last trophic level?
With reference to the levels of an organisation, differentiate between living organisms and non-living objects.
Answer the following question.
Write any two limitations of ecological pyramids.
'The pyramid of energy is always upright.' Explain
Give an example of an ecosystem that shows an inverted pyramid of biomass.
Distinguish between the upright and inverted pyramid of biomass.
Which ecosystem has the maximum biomass?
In a tree ecosystem the pyramid of numbers is:
Which of the following statements is not correct?
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.
(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.
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.
