Ecological Pyramids shows the bio productivity at each trophic level However there are certain inher...........

Environment and Ecology Concept of Ecology

Ecological Pyramids shows the bio-productivity at each trophic level. However, there are certain inherent limitations of ecological pyramids. Which of the following is/are the limitations of ecological pyramids?

1. Same species belonging to two or more trophic levels are not taken into account.

2. Assumption of a simple food chain in the ecological pyramid.

3. Exclusion of saprophytes from the ecological pyramid.

Select the correct answer using the code given below:

2 only

1 and 2 only

3 only

1, 2 and 3

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Explanation:

Limitations of Ecological Pyramids :

Ecological pyramids are the diagrammatic representation of the steps of trophic levels.
There are certain limitations of ecological pyramids such as:
It does not take into account the same species belonging to two or more trophic levels.
It assumes a simple food chain, something that almost never exists in nature; it does not accommodate a food web.
Saprophytes are not given any place in ecological pyramids even though they play a vital role in the ecosystem.