We know that all (but for Money) is the product of nature given to us to use.
Sometimes one feels like offering something to the nature or the superior power, something. When we think about offering, obviously we think of the offering the best.
To our mind, the most costly item is what we think as best. That way when we want to offer a fruit, we think Figs/Cherry/Lychee/Apple/mango etc.
Usually banana is not that expensive to buy and offer.
But the special in the banana is maligned by some westerners, and just due to this some people hate bananas.
Nevertheless nothing stops the fact that bananas are not plants from Seeds. It originates from Saplings. One grown tree makes automatically another young one next to it to grow.
The flower becomes raw banana without pollinating (rather pollinating is made impossible in this). In one flower hundreds of bananas grow, than the ratio of one flower = one raw vegetable = one ripe fruit
These fruits will NOT help grow the banana plant again.
If the trunk of the plant is cut horizontally, you can notice (1) circles, pure round shape and /or (2) shape of a conch!! Very special and auspicious for this plant alone.
So offering the fruits here is the BEST offer one can do to the nature or almighty and NOT the best in PRICE as god or goddess has NOT created money, so the best in monetary terms is not the best of nature!!!