Given below is one of the types of ecological pyramids
This type represents
Pyramid of number in a grassland ecosystem
Pyramid of energy in forest ecosystem
Pyramid of biomass in sea ecosystem
Pyramid of biomass in terrestrial ecosystem
In a food chain, the total amount of living material is depicted by
The upright pyramid of number is absent in
Consider the following statements about ecological pyramids
$I.$ Charles Elton developed the concept of ecological pyramid
$II.$ After the name these pyramids are also called as Eltonian pyramids
$III.$ It is a graphical representation or pyramid shaped diagram which depicts the number of organisms, biomass and energy at each trophic level
Which of the statements given above are correct?
The pyramid of number is based on
Which kind of pyramid is represented by the given diagram