A) One
B) Less than one
C) More than one
D) Zero
Correct Answer: D
Solution :
In some succulent or fleshy plants e.g., Opuntia, Carbohydrates are incompletely oxidized to organic acids in dark without the evolution of \[C{{O}_{2}}\] \[\underset{\text{glucose}}{\mathop{2{{C}_{6}}{{H}_{12}}{{O}_{6}}}}\,+3{{O}_{2}}\xrightarrow{{}}\underset{\text{malic}\,\text{acid}}{\mathop{3{{C}_{4}}{{H}_{6}}{{O}_{5}}}}\,+3{{H}_{2}}O\] \[\text{R}\text{.Q}\text{.}=\frac{C{{O}_{2}}}{{{O}_{2}}}=\frac{0}{0}=0\] (less than one)
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