Simplify the following text for a Grade 12 native English-speaking person.
Original: Seedless bananas and grapes are triploids , and seedlessness results from the abortion of the embryonic plant that is produced by fertilization , a phenomenon known as stenospermocarpy which requires normal pollination and fertilization .
Simplified: Seedless bananas and grapes are triploids , and seedlessness results from the abortion of the embryonic plant which is produced by fertilisation .