Tubers

Definition

Tubers are enlarged structures in some plant species used as storage organs for nutrients. They play a crucial role in vegetative reproduction and overwintering.

5 Must Know Facts For Your Next Test

1. Tubers store starch, which is an important energy source for the plant.
2. Common examples of tubers include potatoes and yams.
3. Tubers form from either the stem or root of the plant, depending on the species.
4. They have nodes or 'eyes' that can sprout new plants.
5. Tubers are different from bulbs and corms, although they all function as storage organs.

Review Questions

• What is the primary function of tubers in plants?
• Name two examples of tuberous plants.
• How do tubers contribute to vegetative reproduction?

Related terms

Rhizome:

A horizontal underground stem that often sends out roots and shoots from its nodes.

Corm:

A short, vertical, swollen underground plant stem that serves as a storage organ.

Bulb:

An underground storage organ consisting of a short stem surrounded by fleshy scale leaves or leaf bases.