Total amount of the dry weight of photosynthate produced by all types of plants per annum is:

  • A
    $1.7$ billion tonnes
  • B
    $17$ billion tonnes
  • C
    $170$ billion tonnes
  • D
    $1700$ billion tonnes

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Similar Questions

Match the Column-$I$ with Column-$II$ and choose the correct option.
Column-$I$Column-$II$
$(a)$ $\text{NPP}$ of ocean$(i)$ $115$ billion tons
$(b)$ Annual $\text{NPP}$ of the whole biosphere$(ii)$ $170$ billion tons
$(c)$ $\text{NPP}$ of terrestrial ecosystem$(iii)$ $55$ billion tons
$(d)$ Secondary productivity$(iv)$ Heterotrophs

The annual net primary productivity of the whole biosphere is approximately . . . . . . of dry weight of organic matter.

What is primary productivity? Give a brief description of the factors that affect primary productivity.

Greater primary productivity depends upon

Regarding the Gross Primary Productivity $(GPP)$ and Net Primary Productivity $(NPP)$ of an ecosystem,which of the following statements is correct?

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