In Opuntia, in night the R.Q. will be [CPMT 1986]
A) One
B) Less than one
C) More than one
D) Zero
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in Opuntia, in night the R.Q. will be zero
Answered by
7
Answer:
In Opuntia, in night the R.Q. will be D) Zero.
Explanation:
R.Q or Respiratory Quotient: ratio of the Carbon dioxide volume given out with respect to the oxygen utilized in the respiration process. Opuntia like cactus which are succulent category plants grow in the extreme hot condition where they keep the stomata close during the day time to prevent loss of water from the plant.
They open the stomata during the night time. During respiration at the night time opuntia utilizes oxygen but does not generate carbon dioxide.
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