Q. Which one of the following is not used for construction of ecological pyramids ?
A) Dry weight
B) Number of individuals
C) Rate of energy flow
D) Fresh weight
Explanation
[Solution from source] Pyramids are built from numbers, biomass measured as dry weight, or energy flow. Fresh weight is not used because water content varies a lot between organisms and would distort the biomass comparison. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.