Question

C. Elton devised an ecological pyramid in 1927; it is a graphic diagram that shows relationship between

• A. Transfer of food through food chain.
• B. Organisms.
• C. Various trophic levels of a food chain.
• D. Population and communities within an ecosystem.

Answer 1

Answer: (C)

The ecological pyramid is a graphical representation of an ecological parameter such as biomass, energy, or the number of individuals present at various trophic levels of a food chain. Ecological pyramids are also called as Eltonian pyramid.
The network of interconnected food chains at different trophic levels in a biotic community is termed as food web. A food chain helps in studying feeding relationships between organisms. It helps us to know energy flow from one trophic level to another.