environment hard MCQ

Which of the following ecological pyramids is always upright and never inverted?

  1. Pyramid of Numbers
  2. Pyramid of Biomass
  3. Pyramid of Energy
  4. Pyramid of Productivity

Answer: Pyramid of Energy

Energy flow is always unidirectional and decreases at each trophic level due to the 10% law, making the energy pyramid always upright.

Topic Ecology and Ecosystems
Exam Relevance UPSC