Brussel's Sprouts are
Undeveloped inflorescence
Floral buds
Vegetative buds
Fruits
The capitulum type of inflorescence is found in
Replum is found in family
Roots are absent in
$A$. Citrus and Ricinus have synandrous condition.
$B$. In epitepalous condition, the cohesion occurs bewteen tepal and filament of stamen.
$C$. Tetradynamous condition consists of two long and four short stamen filaments.