Why are water melons so juicy?

Question

Why are water melons so juicy?

Answer 1

High water content (92%) is the proximate reason, but the ultimate (historical) reason is selective breeding by growers for high water/sugar content.

If you're up for a longer read about the history of cultivation of the watermelon, then you should check out the following article:

http://www.public.iastate.edu/~taber/Ext...

Answer 2

Because it absorbs more waqter during its development. This fruit is developed in summer where there are chances of dehydration of  the developing embryos and seeds. So during evolution the more water absorbing fruits have survived and they came under cultivation.  

Answer 3

main ingredient-water

Answer 4

because they are watermelons ha! ha! ha! ha! Ha! ha!!!!!!!! ha h!!!!!!!