Question

Starch is insoluble in water yet it is accumulated in large quantities in potato because

• A. It is synthesized in potato tuber itself.
• B. It is translocated from the leaves to the potato tuber in the form of sugar and stored there as starch.
• C. Soil micro-organsim deposit starch in tuber.
• D. It is useful consumption.

Answer 1

The correct option is B It is translocated from the leaves to the potato tuber in the form of sugar and stored there as starch.

Sugars are synthesized in leaves and stored in other parts like seed, root, stem. In a potato, sugars are synthesized in leaves and then transported to stem for storage. Sugars are usually synthesized in hexose form but translocated as sucrose and stored as starch in roots, stems or seeds.

Thus, the correct answer is option B.