The condition where filaments and anthers are fused throughout the entire length is ___________.
1. In Synandrous condition, the anthers and their filaments are fused to make a group for the entire length.
2. In Gynandrous condition anthers fused with gynoecium.
3. In Protandrous condition, the male flower becomes mature earlier than the female flower.
4. In Syngenesius condition, anthers become fused whereas filament remains free.
So the correct option is A.