Botany - Respiration in Plants Question with Solution | TestHub

The ratio of the volume of CO₂released to volume of O₂absorbed in the respiratory process is termed as the respiratory ratio or Respiratory Quotient.

$\mathrm{R}.\mathrm{Q}.=\frac{\mathrm{V}\mathrm{o}\mathrm{l}\mathrm{u}\mathrm{m}\mathrm{e}\mathrm{ }\mathrm{o}\mathrm{f}\mathrm{ }\mathrm{C}\mathrm{O}\mathrm{ }\mathrm{e}\mathrm{v}\mathrm{o}\mathrm{l}\mathrm{v}\mathrm{e}\mathrm{d}}{\mathrm{V}\mathrm{o}\mathrm{l}\mathrm{u}\mathrm{m}\mathrm{e}\mathrm{ }\mathrm{o}\mathrm{f}\mathrm{ }\mathrm{O}\mathrm{ }\mathrm{a}\mathrm{b}\mathrm{s}\mathrm{o}\mathrm{r}\mathrm{b}\mathrm{e}\mathrm{d}}$

Value of R.Q. varies from one respiratory substrate to another, e.g., R.Q. of carbohydrates is equal to 1,

R.Q. of lipids and proteins are less than 1, that of organic acid is greater than 1.