At the time of the Buddha, some laypeople complained that the monks destroyed the “life” in seeds.
Therefore lay people can be asked by the monk if it is allowable for him to eat those fruits.
In some monasteries (not all) this is done by the laypeople cutting them.
It is the Commentary to the Vinaya that mentions about “great fruits”.
This practice, however, is not followed in every monastery.
Learn more about the Theravadin Buddhist Monk’s Rules here:
The Bhikkhus’ Rules – Guide for Laypeople