To cross-fertilize flowers A and B, one would first remove flower A's immature stamens and later transfer pollen from flower B to flower A's stigma.
In a flower, the stigma represents the structural region of the flower that functions to collect the pollen grains.
The stigma is a female reproductive structure in the flowers, which plays a fundamental role during fertilization.
The stamens are considered the male reproductive structure of the flowers where pollen grains develop.
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