What is Primary Productivity?

What is primary production ?

What is net primary productivity ?

Which of the following statements are true ? 1. Gross primary productivity is always greater than Net Primary productivity . 2. Gross primary productivity plus the respiration losses give us Net Primary productivity . 3. The rate of respiration of plants affects the Net Primary productivity . 4. Net primary productivity + Gross primary productivity = Respiratory loss.

The rate of biomass production is called as productivity. It may be primary or secondary productivity. Primary productivity is not affected by :-

Net Primary Productivity (NPP) is expressed as

Highest rate of primary productivity is found in

An ecosystem having highest primary productivity is:

Ecosystems having the highest primary productivity in

Which ecosystem has the highest gross primary productivity ?