Question

Potato and ginger are both underground parts that store food.
Where is the food prepared in these plants?


NCERT Class VIII
Science - Exemplar Problems

Chapter 1. Nuitrion in Plants

Answer 1

The food is prepared in a plant in the green leaves by the process, which is called photosynthesis. The process by which green plants make food in the presence of sunlight using carbon dioxide and water is called photosynthesis.

The food is prepared in the form of starch. In potato and ginger plants, the food is stored in the underground parts. 

Ginger and potato are underground stems; while Potato is a tuber, Ginger is a rhizome and the food is stored in them in the form of starch though it is prepared in the leaves. 

Answer 2

Potato and ginger have modified stems (underground stems).
Potato's underground as well as modified stem is called tuber.
Ginger's underground as well as modified stem is called rhizome.
These plants photosynthesize normally like other plants through their leaves.
The food produced i.e.,starch is then stored in these underground stems.
The underground stems swell due to storage of food produced by the plants.