Describe the modifications of plant roots for food storage.

(N/A) $\Rightarrow$ Modifications of roots for food storage:
$(a)$ Storage in tap roots: In carrots,the tap root stores food and becomes conical in shape. In radish,it stores food and becomes fusiform (spindle-shaped). In turnip and beet,the root stores food and becomes napiform (top-shaped).
$(b)$ Storage in adventitious roots: In sweet potato,the adventitious roots store food and become swollen and irregular in shape. These are called simple tuberous roots.
$\Rightarrow$ In asparagus and dahlia,the roots store food and occur in clusters. These are called fasciculated tuberous roots.