Question

Roots are not only responsible for absorption of water and minerals for plants but also for food storage.how

Answer 1

When plant make food it use the amount needed and store rest left . It is stored in different parts of plant by different plant . Eg : beetroot

Answer 2

Many plants like beetroot, carrot, radish store their food in roots which we consume the as food. Plants in the temperate climate meet the necessity to store their food in root during the winter. Those plants which live in the temperate climate follow this kind of phenomenon in order to sprout out in spring.  

Plants like beetroot, carrot and radish are filled with nutrients and sugars due to this type of storage functions.