Well, you can't have seeds in your watermelon if you don't have a watermelon

You got that right

Well bananas are (sort of) seedless, so...
(well at least they have very small seeds)

they have very small seeds according to pbs.org

https://www.pbs.org/newshour/nation/8-things-you-didnt-know-about-bananas

The bananas most commonly eaten today were actually selected and bred to produce smaller seeds.

IDK how I know this stuff I don't even like bananas.

Yum! I regret it