Question

Which of the following ecosystems is most productive in terms of net primary production?

• A. Deserts
• B. Tropical rainforests
• C. Oceans
• D. Estuaries

Answer 1

Answer: (B)

Tropical rainforests

Answer 2

Tropical rainforests have an average net primary productivity $(NPP)$ of $1,500 \,g/m^2/yr$. Open oceans and deserts have average $NPP$ of $125$ and $90\, g/m^2/yr$ respectively. Algal beds and reefs ecosystem have average $NPP$ of $2,500\, g/m^2/yr$.