The annual net primary productivity of the biosphere is approximately

Energy storage at consumer level is called

The gross primary productivity of the ocean in billion tonnes is:

In a grassland ecosystem,which productivity $(g/m^2/yr)$ is the highest?

Which ecosystem has the highest gross primary productivity?

Given below are two statements:
Statement $I$: The primary source of energy in an ecosystem is solar energy.
Statement $II$: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity $\text{(NPP)}$.
In the light of the above statements,choose the most appropriate answer from the options given below: