The R.Q. of Opuntia (prickly pear) will be .. | vedclass

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(D) $Opuntia$ is a succulent plant that performs Crassulacean Acid Metabolism $(CAM)$.In $CAM$ plants,stomata remain closed during the day to prevent

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$0$

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(D) $Opuntia$ is a succulent plant that performs Crassulacean Acid Metabolism $(CAM)$.In $CAM$ plants,stomata remain closed during the day to prevent water loss and open at night for $CO_2$ intake.During the night,$CO_2$ is fixed into organic acids (like malic acid),and during the day,these acids are decarboxylated to release $CO_2$ for the Calvin cycle.Because the $CO_2$ released internally is reused for photosynthesis,there is no net exchange of gases with the atmosphere during the day.Consequently,the Respiratory Quotient $(R.Q.)$ for $CAM$ plants like $Opuntia$ is $0$.

The $R.Q.$ of $Opuntia$ (prickly pear) will be .........

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