Oxygen consumption by the skunk cabbage increases as temperature decreases. The
ID: 204398 • Letter: O
Question
Oxygen consumption by the skunk cabbage increases as temperature decreases. The rate of oxygen
consumption nearly doubles with every 10° drop in ambient temperature. Similarly, in the lotus flower, the
receptacle temperature is maintained between 30°C and 35°C for a two-day period during flower opening.
The ambient air temperature during this two-day period may fluctuate between 10°C and 30°C. Oxygen
consumption was observed to decrease during the day when temperatures were close to 30°C. Explain the
biochemical mechanism for these observations.
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