Boy you are off the charts gorgeous, I would rate you a 69
The reason that the edges of the leaves have water droplets is because plants lose most of their excess water through the stomata. this process is also called as transpiration. This can be seen mostly during the early morning time. I hope the answer comes to your help.
Trait is an obvious, observable, and measurable trait; it is the expression of genes in an observable way. An example of a phenotypic trait is a specific hair color