In ecosystems, the pyramid of biomass represents the total biomass (biological material) present at each trophic level. It shows the relative amount of living or organic matter present in different organisms within the food chain.

The pyramid of biomass is shaped based on the weight of organisms at each trophic level, and it can take different forms:

The relationship between the pyramid of biomass and the pyramid of energy is essential for understanding the flow of energy through an ecosystem:

• The pyramid of biomass represents the total weight of living organisms at each trophic level. It indicates the amount of organic matter available as potential food for the next trophic level.
• The pyramid of energy represents the flow of energy through the ecosystem. It shows the amount of energy available at each trophic level. The energy is typically measured in units like joules or calories.
• Both pyramids are related as they both represent the structure of energy transfer and nutrient flow in an ecosystem, but there are key differences between them: In the pyramid of biomass, the weight of organisms is measured, including both living and dead organic matter, while in the pyramid of energy, the energy content of living organisms is measured. The pyramid of biomass can be inverted or irregular in certain ecosystems due to the accumulation of biomass at higher trophic levels. However, the pyramid of energy is always upright and follows the second law of thermodynamics, which states that energy is lost as heat with each energy transfer, resulting in a decrease in energy availability at higher trophic levels. In general, the pyramid of energy tends to be more consistent across different ecosystems than the pyramid of biomass. This is because the energy flow follows a more predictable pattern, while biomass can vary depending on factors like reproduction rates, growth rates, and mortality rates of organisms.

Overall, both the pyramid of biomass and the pyramid of energy are valuable tools for understanding the structure and functioning of ecosystems and the flow of matter and energy through food chains and food webs. They provide insights into the relationships between trophic levels and the overall dynamics of energy transfer within an ecosystem.

Dr Gaurav H Tandon thank you for your contribution to the discussion

The pyramid of biomass can be upright or inverted, but pyramid of energy is always upright. Moreover, biomass in a biomass pyramid is measured in units of kilograms per square meter (kgm-2) while energy in an energy pyramid is measured in units of kilocalories (kcal). The key difference between pyramid of biomass and pyramid of energy is that a pyramid of biomass shows how much biomass is present in the organisms of each trophic level while a pyramid of energy shows how much energy is retained in the form of new biomass at each trophic level.It shows the relationship between biomass and trophic level quantifying the biomass available in each trophic level of an energy community at a given time. There are two main types of biomass pyramid inverted pyramid of biomass and the upright one. Different Types of Ecological Pyramids: Pyramid of Number, Pyramid of Biomass and Pyramid of Energy. A pyramid of energy represents how much energy, initially from the sun, is retained or stored in the form of new biomass at each trophic level in an ecosystem. Typically, about 10% of the energy is transferred from one trophic level to the next, thus preventing a large number of trophic levels. Since matter and energy are directionally proportional the producer level has the greatest biomass and the tertiary consumers have the least biomass. The, pyramid of energy shows the rate of energy flow and/or productivity at successive trophic levels. Whereas, the pyramid of numbers shows the relationship between producers and consumers at successive trophic levels in terms of their number. Energy pyramid depicts flow of energy in the ecosystem: source of all energy in ecosystem is the SUN. Producers are only organisms in ecosystem that can trap the solar enrgy. So base of energy pyramid is always wide. A biomass pyramid shows the total dry mass of all living organisms at each trophic level. Pyramids of energy are often very similar to biomass pyramids. The energy content at each trophic level is generally comparable to the biomass. An energy pyramid, also known as a trophic or ecological pyramid, is a graphical representation of the energy found within the trophic levels of an ecosystem. The bottom and largest level of the pyramid is the producers and contains the largest amount of energy.