How do you determine if a specific var required polination if you dont see it's fruit?

This is how i "guess"...

1.) If i dont see small fruits dropping on the ground (small fruit/immatured fruit would dropped if not polinated ) for those which required polination.


but then... i have a question....

Question:
For those var which need NOT required polination.... will the seeds from it sprout? Yes ? No? Why ?

Hi Justpachy : yes, you are right. the water was there aft the rain, i pour them away right after that.

Ascpete : thanks for your input, you rest me assured. :) Phew~