energy pyramid Flashcards
(8 cards)
Q: What is the original source of energy in most ecosystems?
A: The Sun
Q: What do producers do?
A: Use sunlight to make food through photosynthesis
Q: What is an energy pyramid?
A: A diagram showing the energy transfer between trophic levels in a food chain
Q: How much energy is transferred to the next trophic level?
A: About 10%
Q: What happens to the other 90% of the energy?
A: It is lost as heat, used for movement, waste, and metabolism
Q: Why are there fewer organisms at the top of the energy pyramid?
A: Because there is less energy available at higher trophic levels
Q: What are the trophic levels from bottom to top?
A: Producers → Primary Consumers → Secondary Consumers → Tertiary Consumers
Q: If producers have 1000 MJ, how much energy does the tertiary consumer get?
A: 1 MJ
