Secondary productivity is the rate of formation of new organic matter by:

The energy or biomass remaining after heterotrophic respiration is called ..........?

Net primary productivity is utilised by

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

State whether the following statements are True or False:
$I.$ The total organic matter synthesized by the producers in the process of photosynthesis per unit time and area is known as gross primary productivity.
$II.$ Net primary productivity is the weight of the organic matter stored by the producers in a unit area/volume per unit time.

$A$: In secondary productivity,no new organic matter is formed.
$R$: It is only the utilisation of part of food manufactured by primary producers in the building of consumer biomass.