Q.

The rhizome is a horizontal, underground or near-surface stem with distinct nodes and internodes. The nodes are regions where leaves, branches or roots emerge, while internodes are the segments between the
nodes. 
(1) A rhizome is a modified stem that grows horizontally underground or just below the soil surface. It is a condensed form of stem that stores food and allows vegetative propagation in certain plants.
(2) The apical bud of a rhizome is the growing tip located at the end of the rhizome, and it generally remains above the ground to continue the upward growth of the plant.
(4) Rhizomes are typically thick, horizontal and prostrate (lying fl at on the ground). They often produce lateral branches, allowing the plant to spread and form new shoots from the nodes.