| An inflorescence having a number of achlamydeous male flower surrounding a single achlamydeous female flower is |
| a) | Verticillaster | b) | Cyathium |
| c) | Spadix | d) | Hypanthodium |
| (b)Cyathium inflorescence has a large, achlamydeous, pedicellate female flower with tricarpellary and syncarpous ovary and many achlamydeous, pedicellate, centrifugally arranged and Scorpioid male flowers. |