Presence of tetradynamous condition and false septum i.e. replum are the features of family

1. Solanaceae
2. Brassicaceae
3. Liliaceae
4. Fabaceae

Tetradynamous condition is having six stamens, two of which are shorter than the others, as in most plants of the mustard family.

Replum is a thin false dissepiment separating the two valves of some fruits from which the valves fall away at maturity.

Both the conditions are present in plants of family Brassicaceae. So the answer is (2).