Which of the following ecosystem has the highest gross primary productivity?
(a) Grasslands
(b) Coral reefs
(c) Mangroves
(d) Equatorial rain forest
Correct Option (b) Coral reefs
Explanation:
The Gross primary productivity of an ecosystem is the total amount of organic matter produced by its producers, i.e. autotrophs. Coral reefs have maximum and deserts have the lowest productivity.