Final answer:
Bananas grow on a 'tree' that is actually a large perennial herb with a pseudostem. Each cluster of bananas is called a hand.
Step-by-step explanation:
Yes, bananas do grow on trees, but the 'tree' that they grow on is not a true tree. The 'tree' is actually a large perennial herb and what appears to be a trunk is a cluster of tightly wound leaf bases called a pseudostem. Bananas grow in clusters called hands, and each hand contains several individual bananas.