Plant from Feminized Seed

I heard that sometimes if a plant grown from feminized seed can produce seed if it becomes stressed etc... If this is possible will there be male pollen sacs present somewhere on one of the plants or can the plant just simply produce a seed??? Thanks.

muliebuck said:

If this is possible will there be male pollen sacs present somewhere on one of the plants:

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Actually it's a female pollen sac AKA hermaphrodite.
No, it's not possible for it to produce a seed without pollen of either sex.

So there must be a pollen sac somewhere? She just cant see it??