moist germinated seeds were placed in a vacuum flask a, and seeds which were killed by boiling and soaked in formalin were placed in a vacuum flask b. thermometers were inserted
in the two flasks and the mouth of each flask was plugged with moist cottonwool. the two flasks were fixed upside down as shown in the adjacent diagram. the initial temperatures on both thermometers were noted. after about 48 hours, the temperature in flask a was much higher than in flask b.
(a) why were the flasks inverted? ?