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

As we move up trophic levels, the number of organisms decreases because energy is lost at each step. Producers are most abundant, while top predators are fewest. This creates the pyramid shape in ecological pyramids.