Flower Arrangement Descriptions A. Perigynous 1. Gynoecium in the center, ovary half inferior B. Hypogynous 2. Gynoecium at the highest position, ovary superior C. Epigynous 3. Cannot be determined D. Cannot be determined 4. Thalamus grows upward and fuses with the ovary, ovary inferior

Step-by-step solution

Perigynous flowers have the gynoecium in the center with a half inferior ovary, hypogynous flowers have the gynoecium at the highest position with a superior ovary, and epigynous flowers have the thalamus growing upward and fusing with the ovary, resulting in an inferior ovary.