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When filament of all stamen fuse but anthers are free condition is called monodelphous, e.g. chine rose.

When all four whorls calyx, corolla, androecium and gynoecium present in flower than called as complete flower.

The answer is (b) Mustard flower

Various Technical Terms related to flowers:

1. Bract: A small leaf like, green structure present at the base of flower is called bract.
2. Bracteole: When a small leaf like structure is present anywhere on pedicel apart from bract is called Bracteole.
3. Bracteate (Br): When flower bom in axis of bract is called breacteate.
4. Ebracteate (EBr): When flower is directly present on peduncle and bract is absent.
5. Ebracteolate(EBiT): When breacteoles are absent in the axis of flower.
6. Pedicellate: Flower with stalk.
7. Sessile: Flowere without stalk.
8. Subsessile: Flower with very small stalk.
9. Complete : Flower with all four whorls namely calyx, corolla, androecium and gynoecium are present is called complete flower, e.g., China rose.
10. Incomplete: A flower in which if any of four whorls is absent is called incomplete flower.,e.g.. Caster flower and flower of Cucurbitaceae family.
11. Actinomorphic: When a flower can be cut into two equal halves along any planes passing through central axis, e.g.,  Brassic China rose, Potato, Ipomoea.
12. Zygomorphic: When a flower can be cut into two equal halves only along one planes passing through central axis.
13. Medianly zygomorphic: When a flower can be put into two equal halves only from median longitudinal plane (anterior to posterior plane), e.g. Pea and Basil.
14. Laterally zygomorphic: When a flower can be cut into two equal halves only from lateral plane, e.g. Fumaria.
15. Asymmetrical: When a flower cannot be cut into two equal halves from any plane, e.g., Canna.
16. Unisexual: When any one of Androecium or Gynoecium is present in flower, eg, Coster.
17. Male or staminate: A flower only with androecium where gynoecium is absent, e.g., Tassel of Zeamays.
18. Female or pistillate: A flower only with gynoecium where androecium is absent, e.g., Cob of Zeamays.
19. Bisexual or hermaphrodite: When both androecium and gynoecium are present in a flower, e.g., China rose.
20. Neuter: When both androecium and gynoecium are absent or non-functional, e.g., Ray florets of Sun flower.
21. Regular: When all whorls have the same number of members and the members of each whorl are similar in shape and are placed at equidistance, e.g, Mustard.
22. Irregular: When all the floral whorls are unequal, e.g., Pisum, Iberis.
23. Cyclic: When all whorls of flower are arranged on thalamus in cyclic pattern.
24. Semicyclic: When in a flower some members are cyclic and some members are non – cyclic. e.g.. Rose.
25. Acyclic: When all whorls of flower are not arranged on thalamus in cyclic pattern, e.g., Ranunculus.
26. Dimerous: When the floral members are in two or in the multiple of two; e.g., Qpium.
27. Trimerous: When the floral members are in three or in the multiple of three; e.g., Monocotelydon flowers.
28. Tetramerous: When the floral members are in four or in the multiple of four; e.g., Mustard.
29. Pentamerous: When the floral members are in five or in the multiple of five; e.g., China rose.

When tepals are coloured like petals are called petalloid perianth e.g., Onion.