Most of the parts will fall off because they are no longer needed. Stamen and petals will fall off (I cannot think of a plant where this doesn't happen). Sepals may or may not fall off. Think of a strawberry or a tomato. The leafy structures on these fruit are actually the remnants of the sepals.
Some pills are completely water soluble and therefore would dissolve in water faster than other liquids which are a mixture of water with other compounds. In some cases the sugar in Kool Aid and in Cola may cause some inhibition of the dissolution process.
The results of the experiment backed up the hypothesis. The average time it took the tablet to dissolve in the 5 degree water was 119 seconds. The average time it took the tablet to dissolve in the 20 degree water was 38. The average time it took the tablet to dissolve in the 35 degree had an average of 26 seconds. There was no pattern noticed in this experiment but there was a strong side and a weak side.