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Which of the following ecosystems has highest rate of gross primary production?
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- Grasslands
- Mangroves
- Coral reefs
- Equatorial rain forest
Correct Option: D
Equatorial forest has highest gross primary production i.e. productivity is maximum hare 12000 Kcal/m2 /yr. Coral reefs are often called "rainforest of the sea". It forms some of the most diverse ecosystem on earth. Coral reef ecosystem have the highest gross primary productivity in the sea.
