The two families of plants represent the convergent adaptation.
Explanation: The Europhobia species gets found in Asia and Africa. They have adapted according to the harsh and arid desert environments. The cactus family too followed the similar path to survive the adaption came in the form
-Longitudinal ribs of the stems
-Spines and shorter leaves
-Evolved fibrous root system being shallower
-Succulent stems allow storing water
-Adapted to Crassulacean metabolism
Both cactus and Europhobic species have adapted the convergent evolution. The ribs can contract during the sweltering climatic conditions and protect the stomata of the plant. This way, both the plants can conserve water and regulate the gaseous exchange.