Distinguish between
$(a)$ Upright and inverted pyramid
$(b)$ Food chain and Food web
$(a)$ Upright and inverted pyramid
Upright pyramid | Inverted pyramid |
$1$. The pyramid of energy is always upright. | $1$. The pyramid of biomass and the pyramid of numbers can be inverted. |
$2$. In the upright pyramid, the number and biomass of organisms in the producer level of an ecosystem is the highest, which keeps on decreasing at each trophic level in a food chain. | $2$. In an inverted pyramid, the number and biomass of organisms in the producer level of an ecosystem is the lowest, which keeps on increasing at each tropic level |
$(b)$ Food chain and Food web
Food chain | Food web |
$1$. It is a single linear sequence of organisms. | $1$. It contains a number of interconnected food chains. |
$2$. Members present at higher trophic levels feed on single types of organisms. | $2$. One organism has alternate food sources. |
Select the correct option w.r.t. Age pyramids.
The upright pyramid of number is absent in
Give differences : Upright Pyramid and Inverted Pyramid
Given below is one of the types of ecological pyramids This type represents
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?