Viviparous seed are reported in

Viviparous seeds are reported in Jack fruit.
Vivipary is the phenomenon that involves seeds germinating prematurely while they are still inside or attached to the parent plant or fruit.
In some trees, like jackfruit, the seeds can be found already germinated while the fruit goes overripe; the moist and humid conditions provided by the fruit mimic a wet soil that encourages germination.