ICSE Class 8 Answered

Type 

Characteristics

Examples

Rhizome

• Underground stem bears buds.
• Each bud gives rise to a new plant.

Ginger, turmeric, banana, sansevieria

Bulb

• It is underground disc-like or spherical stem.
• It is covered by scale leaves which are fleshy and store food.

Onion, lily, garlic

Tuber

• It is the swollen tip of the underground lateral stem.
• It is formed due to storage of food.
•  Each eye of potato develops into a new plant. 

Potato

Corm

• A short, vertical, underground stem is swollen with reserve food.
• Grows for only two to three years.

Crocus, gladiolus