Multiple choice

As the trophic level in an ecological pyramid increases, the number of living organisms

  1. increases

  2. decreases

  3. becomes zero

  4. remains same

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The number of organisms decreases at higher trophic levels due to energy loss during transfers between levels. Producers are most numerous, followed by fewer herbivores, then even fewer carnivores, and very few top carnivores. This creates the pyramid of numbers.