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1 | |
1. Rhizomes, bulbs, and tubers are all modified stems and may provide starchy staples.
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| | A) | True
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| | B) | False
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2 | |
2. _______ are underground horizontal stems, whereas ________are aboveground horizontal stems.
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| | A) | a. Tubers, bulbs
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| | B) | b. Stolons, corms
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| | C) | c. Rhizomes, stolons
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| | D) | d. Rhizomes, tuberous roots
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3 | |
3. Although associated with Ireland, the white potato actually originated in the Andes Mountains.
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| | A) | True
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| | B) | False
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4 | |
4. Which factor(s) contributed to the Irish Potato Famine?
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| | A) | a. 1695 Penal Laws
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| | B) | b. Phytophthora infestans |
| | C) | c. reliance on a single crop
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| | D) | d. all of the above
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| | E) | e. only a and b are correct
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| | F) | f. only b and c are correct
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5 | |
5. The potato was introduced to North America by migrating tribes of Inca Indians from what is now Bolivia.
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| | A) | True
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| | B) | False
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6 | |
6. The dark ring apparent on some potato chips is actually the _______ of the potato tuber.
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| | A) | a. vascular tissue
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| | B) | b. cortex
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| | C) | c. pith
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| | D) | d. bud
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7 | |
7. Potatoes are a good source of carbohydrates because their pith parenchyma cells are filled with starch grains.
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| | A) | True
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| | B) | False
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8 | |
8. Bacillus thuringiensis is a biological agent used to control _______.
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| | A) | a. Colorado Potato Beetle
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| | B) | b. potato blight
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| | C) | c. potato rust
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| | D) | d. all of the above
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9 | |
9. Thor Heyerdahl’s 1947 voyage from Peru to Polynesia supports the premise that the ________ was introduced to Polynesia from South America.
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| | A) | a. yam
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| | B) | b. white potato
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| | C) | c. cassava
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| | D) | d. sweet potato
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10 | |
10. Although most sweet potato varieties contain 50% more sugar than white potatoes, new varieties with less sugar are being developed for potato chips.
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| | A) | True
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| | B) | False
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11 | |
11. Cassava cultivation is distinguished from potato propagation in that it uses the vegetatively produced corm to produce new plants.
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| | A) | True
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| | B) | False
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12 | |
12. Cassava plants must be processed by boiling or frying in order to neutralize the poisonous hydrocyanic acid.
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| | A) | True
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| | B) | False
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13 | |
13. Although cultivation of the banana is greatest in Central America, it originated in
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| | A) | a. South America.
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| | B) | b. Southeast Asia.
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| | C) | c. Central America.
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| | D) | d. the Mediterranean.
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14 | |
14. The greatest threat to Panamanian banana plantations is Fusarium wilt that attacks the xylem cells in stem tissue.
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| | A) | True
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| | B) | False
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15 | |
15. Saponins, which are used to produce human hormones, are derived from
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| | A) | a. cassava.
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| | B) | b. white potato.
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| | C) | c. sweet potato.
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| | D) | d. yams.
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16 | |
16. The starchy corm of taro contains calcium oxalate crystals and is the main ingredient in the Hawaiian dish poi.
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| | A) | True
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| | B) | False
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17 | |
17. The name “sunchoke” for Helianthus tuberosus refers to the plant’s arsenic compounds, which cause choking.
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| | A) | True
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| | B) | False
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18 | |
18. Which of the following is NOT a current use of commercially processed starch?
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| | A) | a. glucose syrup
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| | B) | b. sizing
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| | C) | c. alcohol
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| | D) | d. plastics
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2003 McGraw-Hill Higher Education