If one margin of the appendage overlaps that of the next one and so on, this type of aestivation is observed in :

Step-by-step solution

The condition where one margin of the appendage overlaps that of the next one and so on is defined as twisted aestivation. According to NCERT, examples of twisted aestivation include China rose, lady's finger, and cotton. Cassia shows imbricate aestivation, Calotropis shows valvate aestivation, and Pea shows vexillary aestivation. Answer: Cotton