Which underground stems are used as food?

Which underground stem helps in the storage of food and perennation ?

What are underground stems ? Describe various forms of underground stem. Draw diagram and give one example of each form.

In one plant, underground stems are modified to store food and in another plant, the stem tendrils develop from axillary buds to help plant climb. They are

A portion of underground stem bearing bud forms a new plant in

In two plants A and B the first plant shows horizontally growing underground stem and the second plant shows vertically growing underground stem and both of them belong to the same family. A and B plants respectively are

Potato tuber is an underground stem because it bears

Stem is underground in

Underground stems are primarily meant for

Which of the organism is used as food ?