Assured seed set even in absence of pollinators occurs in

Which of the following flowers produce assured seed set even in the absence of pollinators ?

Which of the following flowers produce assured seed set even in the absence of pollinators ?

Pollination occurs in

Pollination occurs in

Pollination occurs in

Self pollination occurs in

The flowers of all these plants show assured seed- set even in the absence of pollinators, except in

How is it possible in Oxalis and Viola plants to produce assured seed sets even in the absence of pollinators?

The flowers of all these plants show assured seed- set even in the absence of pollinators, except in