Practice question

Brassica campestris mustard flower displays actinomorphic radial symmetry with four free sepals arranged 2+2 and four cruciform petals placed at right angles forming cross, allowing equal access from any direction for generalist pollinators. Inferior ovary characterizes epigynous families Asteraceae Myrtaceae not mustard which possesses superior bicarpellary ovary with false septum replum. Bilateral symmetry refers to zygomorphic Fabaceae Scrophulariaceae and asymmetry to Canna Marantaceae. Radial symmetry combined with tetradynamous stamens, parietal placentation and siliqua fruit forms robust diagnosis for Brassicaceae within order Capparales adapted for insect pollination.