[Trivia Quiz for Seniors] Introducing fun facts questions about sweet potatoes!
Sweet potatoes, a quintessential autumn delicacy, are loved for their fluffy texture and gentle sweetness.
They can be enjoyed in a variety of dishes, such as baked sweet potatoes and sweet potato desserts.
There’s a wealth of knowledge about sweet potatoes, from how they’re produced to their nutritional benefits.
This time, we’re introducing a trivia quiz about sweet potatoes.
Not only is it fun as a quiz, but knowing these tidbits can also spark lively conversations with those around you.
You might even discover new ways to make the sweet potatoes you already enjoy taste even better.
Give it a try!
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[Trivia Quiz for Seniors] Introducing fun facts about sweet potatoes! (1–10)
Which of the following has the highest sweet potato production in the world?
- Malawi
- China
- Tanzania
See the answer
China
China produces about 76 million tons of sweet potatoes annually, making it the clear number one in the world. Malawi is second with 5.8 million tons, and Tanzania is third with 5.4 million tons.
Which of the following foods does not use sweet potatoes as an ingredient?
- tapioca
- spring rain
- mizuame (Japanese starch syrup)
See the answer
tapioca
Tapioca is made from the roots and rhizomes of a tropical plant called cassava. Cassava belongs to the morning glory family, like sweet potatoes, but it is classified in a different genus.
When is the sweet potato harvest season?
- April to July
- December to March
- August to November
See the answer
August to November
The harvest season for sweet potatoes varies depending on the variety and region, but it’s generally from autumn to winter. It seems that if you store sweet potatoes for 2–3 months, they develop more sweetness. Winter is the time when you can really enjoy them in various dishes like baked sweet potatoes and tempura.
[Trivia Quiz for Seniors] Introducing Fun Facts about Sweet Potatoes! (11–20)
Which of the following sweet potato products was called ‘gunjin-imo’ (soldier potato)?
- dried sweet potato
- Tempura
- roasted sweet potato
See the answer
dried sweet potato
During the Russo-Japanese War and the Second Sino-Japanese War, dried sweet potatoes were valued as portable rations for soldiers, so they were called 'military potatoes.'
Among sweet potato varieties, which one has the highest sugar content?
- Silk Sweet
- Anno sweet potato
- Beniazuma (a Japanese sweet potato variety)
See the answer
Anno sweet potato
Annoimo has a sugar content as high as 30 degrees and is by far the sweetest variety among sweet potatoes. Silk Sweet is 8.8 degrees, and Beni Azuma is 14 degrees.
Where would be suitable as a place to store sweet potatoes?
- A place in the sun
- cool, dark place
- refrigerator
See the answer
cool, dark place
Sweet potatoes are sensitive to cold and can suffer chilling injury, so storing them in the refrigerator is not suitable. They also sprout at temperatures above 18°C, so the proper storage is a cool, dark place at 10–15°C.
What is the most widely cultivated sweet potato variety in Japan?
- Beniharuka (a Japanese sweet potato variety)
- Anno sweet potato
- Koganesengan
See the answer
Koganesengan
The sweet potato variety share is led by Koganesengan at 22.1%. Beniharuka ranks second. Annou-imo is not in the rankings.


