Botany-Respiratory Quotient
NEET Botany Respiratory Quotient MCQ Question
Type: MCQ-numerical-Hard-Class 11
Calculate the respiratory quotient (RQ) if a plant uses a fatty acid as its substrate for respiration, given that the reaction involves the complete oxidation of a fatty acid with the molecular formula C18H36O2. Assume the complete oxidation of this fatty acid produces 18 CO2 and consumes 26 O2 molecules.
A
0.69
B
1.00
C
0.85
D
1.25
Correct Answer
Option A
Detailed Explanation
The respiratory quotient (RQ) is calculated as the ratio of CO2 evolved to O2 consumed. For the complete oxidation of C18H36O2, 18 CO2 are produced and 26 O2 are consumed, so RQ = 18/26 = 0.69.
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