Q. With reference to the Pyramid of Numbers in ecosystems, consider the following statements:
1.The Pyramid of Numbers in a forest ecosystem is typically inverted due to a small number of large producers.
2.The Pyramid of Numbers always accurately represents the biomass and energy flow at each trophic level.
Which of the statements given above is/are correct?
Answer: A
Notes:
Explanation:
- In a forest ecosystem, a few large trees (producers) support a greater number of herbivores (e.g., birds), followed by more parasites and hyperparasites, forming an inverted pyramid of numbers.
- The pyramid of numbers does not account for the biomass or size of organisms at each trophic level, and thus does not always accurately represent the energy or mass flow within an ecosystem.
Source: Environment (NCERT)
