Question
Biology Question on morphology of flowering plants
The family containing mustard and its main characters are
Brassicaceae - Tetramerous flowers, six stamens, bicarpellary gynoecium, siliqua type fruit
Brassicaceae - Pentamerous flowers, many stamens, pentacarpellary gynoecium, capsule type fruit
Solanaceae - Pentamerous flowers, five stamens, bicarpellary gynoecium, berry type fruit
Poaceae - Trimerous flowers, three stamens, monocarpellary gynoecium, caryopsis type of fruit
Brassicaceae - Tetramerous flowers, six stamens, bicarpellary gynoecium, siliqua type fruit
Solution
Mustard (Brassica campestris) belongs to family Brassicaceae (Cruciferae). Mustard is characterised by tetramerous flower, six stamens with tetradynamous condition (i.e., two stamens of outer whorl are smaller than the four stamens of inner whorl), bicarpellary gynoecium and siliqua type of fruit.