Onion belongs to the family .........

Diadelphous condition is common in .......

In the Bentham and Hooker system of classification, the position of certain families like Ceratophyllaceae, Callitrichaceae, and Empetraceae is uncertain, and these unrelated families are placed in a group called "Ordines anomali". This group is included in:

Tobacco belongs to the ....... family.

The aestivation of petals in the family $Malvaceae$ is ......

The most advanced family is