Multiple choice When the perianth becomes green and resembles the calyx, it called ____. monoecious dioecious petalloid sepalloid Reveal answer Fill a bubble to check yourself D Correct answer Explanation Sepalloid perianth is green and resembles calyx (sepals). Petalloid perianth is colorful like petals. The question describes a green, calyx-like appearance, so sepalloid is correct. Monoecious and dioecious are plant sexuality terms.