Which of the following statements is are correct with respect to lsquo Ecological Pyramid rsquo 1 Th...........

Environment and Ecology Concept of Ecosystems

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Which of the following statements is/are correct with respect to ‘Ecological Pyramid’?

1.The pyramid of energy will always be upright.

2.The pyramid of numbers is inverted only in an aquatic ecosystem.

Select the correct code below.

1 Only

2 Only

Both 1 and 2

Neither 1 nor 2

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Explanation:

An ecological pyramid (also trophic pyramid, eltonian pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass or bio productivity at each trophic level in a given ecosystem.

Biomass pyramids show how much biomass (the amount of living or organic matter present in an organism) is present in the organisms at each trophic level, while productivity pyramids show the procroation or turnover in biomass. There is also pyramid of numbers which represent the number of organisms in each trophic level. They may be upright (e.g. Grassland ecosystem), inverted (parasitic ecosystem) or dumbbell shaped (forest ecosystem).
Pyramid of energy is upright because when energy flows from a trophic level to next trophic level, some energy is always lost as heat at each step. Finally it is lost to atmosphere and never goes back to Sun.