Final answer:
The largest fruit that grows on trees in Costa Rica is the jackfruit. It can grow to be quite large, with some fruits reaching up to 80 pounds in weight.
Step-by-step explanation:
The largest fruit that grows on trees in Costa Rica is the jackfruit (Artocarpus heterophyllus). The jackfruit is a tropical fruit native to South Asia but is now widely cultivated in Costa Rica and other tropical regions around the world. It can grow to be quite large, with some fruits reaching up to 80 pounds in weight!
Learn more about Fruit in Costa Rica