A tuber is a fleshy modified stem with nodes that produce leaves. Examples of plants that develop from bulbs include onions garlic. For example potatoes are stem tubers while dahlias are root tubers. An example of a bulb is an onion bulb Figure 913 Onion bulb Stem Tubers These are modified stems which serve as food storage The stem extends into the. A good example is the underground stem of blue dicks Dichelostemma capitatum Tubers are. The whole turmeric is a tuberous rhizome with a rough segmented skin The rhizome is yellowish-brown with a dull orange interior that looks bright yellow when powdered. Turmeric is propagated only vegetatively because it is a sterile hybrid between wild Curcuma species probably between Curcuma aromatica and closely related species such as Curcuma petiolata or Curcuma aurantiaca. Like roots the stems also undergo modifications to perform various special functions. You can see many of the modifications in common garden and edible plants For example Bulbs are underground buds with the stem reduced to a small knob. Bulbs Bulbs come in 2 basic types Tunicate bulbs onions and tulips are examples Scaly bulbs tiger and asiatic lilies are examples. UNDERGROUND STEM MODIFICATIONS YouTube. However they are large modified lateral roots used for nutrient. Bulb Description Functions & Examples Britannica.