Vexilary aestivation is usually seen in ________ADimerous flowersBPentamerous flowersCTetramerous flowersDTrimerous flowersAnswer: D. Trimerous flowers Read Explanation: Vexilary aestivation is usually seen in pentamerous flowers. The largest petal overlaps 2 smaller ones, which in turn overlaps with the smallest petals. This kind of aestivation is found in pea flower.Read more in App