In succulent plants,the R.Q. is less than 1 d | vedclass

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(D) The $R.Q.$ (Respiratory Quotient) is the ratio of the volume of $CO_2$ evolved to the volume of $O_2$ consumed.In succulent plants (e.g.,$Opuntia$

Vedclass · Accepted Answer

Incomplete oxidation

Vedclass · Answer

(D) The $R.Q.$ (Respiratory Quotient) is the ratio of the volume of $CO_2$ evolved to the volume of $O_2$ consumed.In succulent plants (e.g.,$Opuntia$),organic acids (like malic acid) are formed during the night,which involves the incomplete oxidation of carbohydrates.In this process,$CO_2$ is not evolved,but $O_2$ is consumed,resulting in an $R.Q.$ value of less than $1$ (approaching zero).Therefore,the correct answer is $D$.

In succulent plants,the $R.Q.$ is less than $1$ due to:

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