In Allium cepa,

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the perianth lobes of 1st whorl are united with filaments of stamens of fourth whorl of the flower

the perianth lobes of 2nd whorl of are united with filaments of stamens of 3rd whorl of the whorl

the stamens present in the 3rd whorl of flower are fused among themselves at the anther level.

perianth lobes of first whorl are united with the perianth lobes of second whorl as well as the filaments of stamens present in 3rd whorl of flower.

answer is D.

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Detailed Solution

In the flower of onion, perianth lobes of first whorl are united with the perianth lobes of second whorl as well as the filaments of stamens present in 3rd whorl of flower. The perianth lobes of second whorl of flower not only united with the perianth lobes of 1st whorl but also with the filaments of stamens present in the 4th whorl of flower.

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