Advertisements
Advertisements
प्रश्न
Pyramid of numbers is ______.
पर्याय
Always upright
Always inverted
Either upright or inverted
Neither upright nor inverted
Advertisements
उत्तर
Pyramid of numbers is either upright or inverted.
APPEARS IN
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 upright and inverted pyramids.
Explain energy pyramid
“The pyramid of biomass is not always upright.” Explain the statement.
Distinguish between the upright and inverted pyramid of biomass.
Which ecosystem has the maximum biomass?
Which one of the following is not used for construction of ecological pyramids?
Which of the following organism form the decomposers?
Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?
In an aquatic ecosystem, a mollusc typically belongs to-
What does the base tier of the ecological pyramid represent?
The number of trophic levels in an ecosystem are limited. 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.
Draw a diagram of pyramid of energy.
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.
| 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.
-
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.
