Which of the following ecosystem has very little primary productivity ?

Which of the following ecosystem has very little primary productivity ?

1. Forest

2. River

3. Sea

4. Grassland

Answer - option (2) River

Explanation -

Primary Productivity

• It is the rate at which energy is converted by Photosynthesis autotrophs to organic substances.

• It is the rate of energy obtained by photosynthesis.

• Forests ecosystem has maximum primary productivity.

• In aquatic ecosystem, the primary productivity depends on the availability of nutrients and light.

• A river ecosystem has little primary productivity.

• Sea ecosystem has phytoplanktons i.e. it has primary productivity and availability of nutrients is more as compared to River ecosystem.

Ecosystem | brainsnippers