In synandrous condition, there is a fusion of
In synandrous condition of stamen, all the anthers as well as the filaments are united to form a single bundle or group. It is a feature of the family Cucurbitaceae.
A. When only filaments are united to form a single bundle, the condition is called monadelphous.
B. When both the anthers and filaments are united, the condition is called synandrous.
C. When only the anthers are united, the condition is called syngenesious.
Hence, the correct answer is 'Both filaments and anthers'