Productivity is the rate of production of biomass expressed in terms of $\begin{array}{*{20}{c}} {\left( i \right)\,\left( {kcal\,{m^{ - 3}}} \right)\,y{r^{ - 1}}}&{\left( {ii} \right)\,{g^{ - 2}}y{r^{ - 1}}}&{\left( {iii} \right)\,{g^{ - 1}}y{r^{ - 1}}}&{\left( {iv} \right)\,\left( {kcal\,{m^{ - 2}}} \right)\,y{r^{ - 1}}} \end{array}$

NEET UG BIOLOGY MCQ: ECO SYSTEM

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Productivity is the rate of production of biomass expressed in terms of

\begin{array}{cccccccccccccccccccc} {\left( i \right)\,\left( {kcal\,{m^{ - 3}}} \right)\,y{r^{ - 1}}}&{\left( {ii} \right)\,{g^{ - 2}}y{r^{ - 1}}}&{\left( {iii} \right)\,{g^{ - 1}}y{r^{ - 1}}}&{\left( {iv} \right)\,\left( {kcal\,{m^{ - 2}}} \right)\,y{r^{ - 1}}} \end{array}

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Correct option: C

(ii) and (iv)

Option C ((ii) and (iv)) is correct because productivity is measured as biomass production per unit area per unit time, expressed as g m⁻² yr⁻¹ or kcal m⁻² yr⁻¹.

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