NEETBotanyRespiration in Plants
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The respiratory quotient (RQ) of tripalmitin is less than 1 . Reason (R): Fats contain less oxygen in their molecular structure compared to carbohydrates and require more external oxygen for complete oxidation. In the light of the above statements, choose the most appropriate answer from the option
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
Step-by-step solution
Assertion (A) is correct because tripalmitin is a fat, and according to NCERT, the respiratory quotient (RQ) for fats is approximately 0.7 , which is less than 1 . Reason (R) is also correct and provides the correct explanation for (A). The RQ is defined as the ratio of the volume of CO ₂ evolved to the volume of O ₂ consumed. Fats are highly reduced compounds containing proportionally much less oxygen in their molecular structure compared to carbohydrates. Consequently, a larger volume of external oxygen is requir