Question

Net productivity is the rate of storage of organic matter which is not used by the consumer, it is expressed as _________

• A. production of Carbon g/m\textsuperscript{2}/day
• B. Chl/g dry wt/unit area
• C. Chl/g/m\textsuperscript{2}/unit area
• D. CO\textsubscript{2} fixed/g Chl/hour

Hint:

Net primary productivity = Gross primary productivity − Respiration.

Answer 1

The Correct Option is A

Step 1: Understanding net productivity.
Net productivity refers to the amount of organic matter produced by plants that remains after respiration losses.

Step 2: Measurement units.
It is commonly measured in terms of biomass or carbon accumulated per unit area per unit time.

Step 3: Identifying the correct expression.
Production of carbon in g/m\textsuperscript{2}/day correctly represents net productivity.

Step 4: Conclusion.
Hence, net productivity is expressed as production of carbon per unit area per day.