Question

In Ipomoea-batatas/sweet potato the food is stored in
a. Root tuber
b. Stem tuber
c. Bud
d. Leaves

Answer 1

Hint: A tuberous root is a modification of the root which acts as storage organs and is an enlarged part of roots. Propagation takes place by crown division and can be performed on the dormant or in actively growing plants. Each crown division includes several buds or "eyes" and sufficient storage roots to make a new plant. The thickened parts of the roots store nutrients.

Complete answer:
- Root tuber is the root modification in which the food is stored in the root.
- It is seen in Ipomoea batatas as in this plant food is stored under the ground that is in the roots.
- Root tubers are perennating organs, over periods when the plant cannot actively grow thickened roots that store nutrients.
- Root tubers can arise from any part of the root. The tuber represents a swollen root. Several finer root branches can arise from it. Eyes are absent.
- Nodes and internodes are absent. The apical bud is absent. Chlorophyll does not develop in a root tuber. It has root-like internal anatomy.
- Sweet potato is vegetative propagated, and diseases, including viruses, can be easily transmitted to the young plants from an infected mother plant.
- It is a dicotyledonous, perennial plant, producing edible tuberous roots. It belongs to the family Convolvulaceae, the morning glory.
- The ploidy levels range from 2x to 6x.
 -Sweet potato is the only Ipomoea species of economic importance as a food crop.
 -The sweet potato grows well in poor soils and has a short growing period. Among the major starch staple crops, it has the largest rates of production per unit area per unit time.
 -Stem tuber is a type of stem modification where the food is stored in the stems part of the plants.
- Bud is the small overgrowth that arises either from roots stem or leaves.
- Leaves usually store water and minerals like in eucalyptus.
- So, In Ipomoea-batatas/sweet potato the food is stored in the Root tuber.

Hence, the correct answer is option (A).

Note: Sweet potato is a type of root modification, the modification helps the roots to absorb and transport water and minerals from the soil to different parts of the plant. They are also modified to store food and support plants by respiration. Sweet potato roots are rich in vitamin C and essential mineral salts. In yellow and orange-fleshed storage roots, due to the high beta-carotene content, they are being promoted to alleviate vitamin A deficiency.