A
storage organ is a part of a
plant specifically modified for storage of
energy (generally in the form of
carbohydrates) or
water. Storage organs often grow underground, where they are better protected from attack by
herbivores. Plants that have an underground storage organ are called
geophytes in the
Raunkiær plant life-form classification system. Storage organs often, but not always, act as
perennating organs which enable plants to survive adverse conditions (such as cold, excessive heat, lack of light or drought).
