What is the family of $Rauwolfia \text{ } serpentina$?

Which of the following is the correct name for the family $Gramineae$?

Which of the following families belongs to the series $Inferae$ of the subclass $Gamopetalae$?

The floral formula of Tomato/Tobacco is ......

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:

Which of the following is a correctly matched pair?