Juan y Marta estudiaban la evolución de las plantas. Juan estudió las plantas de la clase Magnoliopsida, mientras que Marta estudió las plantas de la subclase Rosidae.

¿Cuál de los dos estudió más especies de la familia Rafflesiales?
The Rafflesiales is a synonym of the Malpighiales order of plants in the subclass Rosidae, class Magnoliopsida.

Since Juan studied the plants of the Magnoliopsida class and Marta studied the plants of the subclass Rosidae, we need to determine which of them studied the Malpighiales order.

Given that Malpighiales is a synonym of Rafflesiales, we can conclude that the person who studied the subclass Rosidae, which includes the Malpighiales order, studied more species of the Rafflesiales family.

Therefore, Marta studied more species of the Rafflesiales family.