Question

 Write a comparative note on pyramid of biomass and pyramid of energy.

(OR) 

What are the differences between pyramid of biomass and pyramid of energy?

Answer 1

Pyramid of number	Pyramid of energy
1. Pyramid of number is a graphical representation designed to show the number of organisms at each tropic level in a given ecosystem.	1. Pyramid of energy is a graphical representation designed to show the quantity of energy present at each tropic level in a given ecosystem.
2. It shows the population of organisms at each tropic level in a food chain.	2. It shows the available energy at each tropic level in a food chain.
3. This pyramid sometimes does not look like a pyramid at all. It may be upright like in a grassland ecosystem partly upright like in forest ecosystem or inverted like in parasitic ecosystem.	3. This pyramid is always upright, as only 10% of energy is transfering from one tropic level to other.