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. |
$A $ : Ecological pyramids cannot explain all the vital functions of any ecosystem.
$R$ : Pyramids actually does not explain the role of organisms working at more than one trophic levels.
Give differences : Upright Pyramid and Inverted Pyramid
The pyramid of number of a parasitic food chain in tree ecosystem is
$A$ : Pyramid of biomass is always upright for tree ecosystem.
$R$ : Total biomass of a tree in a specific area is more than that of herbivores.
What is the rate of secondary production in the energy pyramid given below?