Practice question

Hypogynous flower architecture features convex dome-shaped thalamus where gynoecium ovary occupies superior position above insertion points of sepals petals and stamens, other whorls arise hypogynously around ovary base. Measured ovary position superior indicates free independent growth not adnate to perianth. Inferior ovary epigynous as in Asteraceae and guava where thalamus fuses, half-inferior perigynous as in Rosa peach where hypanthium cup partially surrounds. Hypogyny is ancestral condition and indicates floral parts unfused to ovary wall, important for fruit classification as true superior ovary forms capsule berry or legume free from accessory tissues.