How are gross production and net production different?
a. net production is always greater than gross production.
b. net production is always less than gross production.
c. only animals have net production.
d. only plants have net production.

The correct answer is B) Net production is always less than gross production.

Gross production or gross primary productivity ( GPP) is the total amount of energy produced by producers in a particular area and a particular time.

GPP= rate at which organic matter is produced + rate of  respiration

Net production or net primary productivity ( NPP) is the net amount of energy that is stored by producers in unit area and time. It does not include the energy lost in respiration.

NPP= GPP- rate of respiration

Thus, net production is always less than gross production.                  

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