Question

The pyramid of numbers in grassland ecosystem will be
A. Upright
B. Inverted
C. Irregular
D. Linear

Answer 1

Hint: The representation of the relation between different organisms on different trophic levels in a graphical way is known as an ecological pyramid. There are many types of ecological pyramid like-
-Pyramid of numbers
-Pyramid of productivity
-Pyramids of biomass
-Pyramid of energy
These pyramids can be upright, inverted or in any other shape depending on the ecosystem.

Complete step by step answer: Ecosystem consists of biotic and abiotic components. There are many types of ecosystem in our environment such as aquatic ecosystem, terrestrial ecosystem, etc.
The graphical representation of each trophic level involved in an ecosystem is called pyramid.
Pyramids of numbers show the relationship between the numbers of species in every trophic level.
Trophic level is a position which an organism occupies within an ecological pyramid or a food chain.
The grassland ecosystem producer (like-grass) is always higher in number compared to the consumers.
Primary consumers (herbivores- grasshopper) will be less than the producer but higher in number compared to the secondary consumers (carnivores- frog).
 The tertiary consumers like-snake will be less in number compared to secondary consumers.
As we move towards the higher trophic level the number of organisms is decreasing.
So the pyramid of numbers in the grassland ecosystem will be upright in nature. So, option (A) will be correct here.

Note: Pyramid of energy will be upright in every ecological system because on each trophic level some part of energy will free as a heat into the environment. Around 90% energy loss happens when energy is transferred from one trophic level to another. The pyramid of number, productivity and biomass can be upright or inverted. This will depend on the ecological system.