8. Plants that are grown from open-pollinated, unadulterated seeds are known as: a. heirloom b. GMOs c. hydroponic d. field run 9. Potatoes, lettuce, onions, and tomatoes make up_____ of fresh produce purchases. a. 1 percent b. 12 percent c. 40 percent d. none of the above 10. Which of the following countries does the United States import the higher percentage of produce from? a. Costa Rica b. Guatemala c. Mexico d. the percentages of imports from these countries are all equal 11. Which one of the following packaging procedures is most expensive? a. slab packing b. combination pack c. flat and lug packing d. cell pack 12. When purchasing precut, convenience fresh produce items, the supplier must make sure that he or she preserves the appropriate pulp: a. count b. temperature c. yield d. color 13. Fresh produce can have its shelf life extended by the use of such preservation methods as: a. refrigeration b. waxing c. controlled atmosphere storage d. all of the above 14. What is the disadvantage of slab-packed fresh produce? a. its AP price is usually very high b. the U.S. grade is very low c. by the time you receive the merchandise, some of it may be damaged d. all of the above 15. An appropriate intended use for the lower grades of fresh produce is: a. producing jams and jellies b. preparing juices c. making generic canned produce d. all of the above 16. Some fresh produce items are subject to a certain amount of: a. trim b. weight loss c. shrinkage d. all of the above