Two well-watered, identical plants were placed in brightly lit rooms at different temperatures — one at 15°C and the other at 38°C. The plant in the warmer room…

Two well-watered, identical plants were placed in brightly lit rooms at different temperatures — one at 15°C and the other at 38°C. The plant in the warmer room showed wilting by the end of the day.

(a) Which plant phenomenon resulted in the wilting of the leaves?

(b) Mention the factor of the phenomenon that is being tested.