A) wheat
B) millets
C) bean
D) castor
Correct Answer: D
Solution :
R.Q. or respiratory quotient is the ratio of volume of carbon dioxide evolved to the volume of oxygen consumed per unit time per unit weight. \[R.Q.=\frac{{{V}_{C{{O}_{2}}}}}{{{V}_{{{O}_{2}}}}}\] (i) R.Q. = 1, if respiratory substrate is carbohydrade e.g., Wheat, millet. (ii) R. Q. < 1, if respiratory substrate is fat or protein e.g., Castor.
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