Many people mislead banana tree a tree. If you refer trees that have a solid, branching trunk, then banana trees are not trees because their "trunks" are neither very solid nor branched. Banana plants grow from underground stolons. Bananas come in a variety of sizes and colors; most cultivars are yellow when ripe but some are red or purple. The ripe fruit is easily peeled and eaten raw or cooked. Depending upon cultivar and ripeness, the flesh can be starchy to sweet, and firm to mushy, where as the leaves of the banana are large, flexible, and waterproof.  Cultivated bananas are sterile and unable to produce feasible seeds. As there is lacking of seeds, another form of propagation is required. This involves removing and transplanting part of the underground stem. Usually this is done by carefully removing a sucker with some roots intact. In some countries, bananas are commercially propagated by means of tissue culture. This method is preferred since it ensures disease-free planting material