NEET2017BotanyRespiration in PlantsActual
Assertion: Glucose is the favoured respiratory substrate. Reason : When glucose is used as respiratory substrate it is completely oxidised and RQ is 1 .
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion.
- BIf both assertion and reason are true but reason is not the correct explanation of assertion.
- CIf assertion is true but reason is false.
- DIf both assertion and reason are false.
Correct answer
A. If both assertion and reason are true and reason is the correct explanation of assertion.
Step-by-step solution
The ratio of the volume of CO ₂ evolved to the volume of O ₂ consumed in respiration is called the respiratory quotient (RQ) or respiratory ratio. RQ = Volume of CO ₂ evolved Volume of O ₂ consumed The respiratory quotient depends upon the type of respiratory substrate used during respiration. When carbohydrates are used as substrate and are completely oxidised, the RQ will be 1 , because equal amounts of CO ₂ and O ₂ are evolved and consumed respectively. gathered C ₆ H ₁₂ O ₆+6 O ₂ 6 CO ₂+6 H ₂ O + Energy RQ = 6