When the number of organisms at successive levels are plotted, they assume the shape of a pyramid. This is called the pyramid of
Energy
Number
Biomass
Both $(a)$ and $ (c)$
Which kind of pyramid is represented by the given diagram
The relationship in an ecosystem can be depicted in
In a tree ecosystem, the pyramid of number is
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?
Pyramid of number in a cropland ecosystem is