because its from a seed and those "white seeds'' are seed that produce into watermelon when you plant them.
above answer is f-cking messed up
here is the real answer
the seeds you get from seedless watermelons are edible (not really but swallowing is fine), unlike real watermelons where they are mainly black and much harder than seedless watermelons
Every fruit except for seedless watermelons.
watermelons -black and white seeds
A good rule of thumb is, if the seed is hard, don't eat it. You would naturally eat cucumber, pea, bean and tomato seeds, but not apple or peach seeds. Melon, sunflower and squash seeds are edible even though you might find them hard in the fruit, but they are exceptions to the rule.
A watermelon isn't a vegetable because it has seeds in it. But i don't know why seedless watermelons aren't a vegetable.
seedless
Those white seeds are vestigial seeds and are not viable - which means they don't have the innards to germinate. They can be eaten. Since a fruit's function is to provide seeds for plant propagation, it can be difficult to produce a completely seedless fruit. At least you don't have a bunch of seeds to spit out!
No you can not I have never eaten an apple with no pips, but a mutation is always possible. That is why we have seedless bananas, seedless watermelons, and seedless grapes. If a seedless variety should happen to be found or bred, it will then be cultivated for its commercial appeal. Of course, it has to taste good, too. Seeds aren't everything.
on the ground , its a plant
The answer is never! The seedless watermelon is in fact not anything of the sort. On the contrary it has many seeds. I just ate a slice about a few minutes ago and low and behold my seedless watermelon had seeds, albeit edible seeds, but seeds nonetheless. This new fruity invention should be called the watermelon with edible seeds. Of course that doesn't have the same ring as the "seedless watermelon"
* Lettuce seeds will only germinate if given light and kept in 18-20 degrees * Seedless watermelons grow from seeds * A few thousand-year-old wheat seeds were found in the desert and germinated
seedles
They are hybrid plants. Specifically grown to be seedless. I guess you could call them "engineered plants."