Part 2 — Answer key

Compare your answers after you have finished Part 1.

1. In a basic fruit botany context, an apple is produced on which type of plant?
   Tree
2. Apples are a meaningful source of dietary fiber, especially when the skin is eaten.
   True
3. A small cafe wants to keep eating apples crisp for about two weeks in a refrigerator. Which storage temperature range is closest to ideal for slowing ripening without freezing the fruit?
   Just above freezing, around 0 to 4 °C (32 to 39 °F)
4. You are planning a small backyard apple planting with one main dessert variety and want reliable crops. What is the most effective step to improve fruit set?
   Plant a compatible pollinizer variety and encourage bee activity
5. You are writing apple trivia questions about flavor profiles. Which of the following apple varieties are typically classified as tart rather than primarily sweet? Select all that apply.
   Bramley; Granny Smith
6. A small juice producer wants a naturally cloudy, unfiltered style of apple juice. Which process should they minimize or skip to keep the juice hazy?
   Tight filtration through fine filters
7. Most modern dessert apple cultivars can reliably produce good crops without insect pollinators because they are fully self-fertile.
   False
8. A breeder is selecting seedlings that produce especially crisp and juicy apples. Which underlying fruit tissue characteristics most directly contribute to that crisp, juicy texture? Select all that apply.
   High cell turgor pressure in the flesh; Small, tightly packed air spaces between cells
9. A grocery manager notices that apples displayed right next to ripe bananas are softening and coloring faster than apples in another part of the store. What is the main cause of this difference?
   Ethylene gas from the bananas accelerating ripening
10. A person with prediabetes wants a fruit snack that raises blood sugar more slowly. Why can whole apples (with skin) be a better choice than the same calories from clear apple juice?
    Fiber and polyphenols in whole apples slow sugar absorption
11. A baker wants apples that keep their shape and texture in pies rather than turning into sauce. Which varieties are generally good choices for this use? Select all that apply.
    Braeburn; Granny Smith; Rome
12. A home grower notices that each spur on their apple tree is carrying a tight cluster of small fruits, and the fruit size has been disappointing in past years. Which in-season practice will most directly improve final fruit size and quality?
    Manually thin the clusters to leave one fruit with good spacing
13. When cut apples are exposed to air, brushing the slices with lemon juice can slow browning because the acid and vitamin C interfere with the activity of polyphenol oxidase.
    True
14. You are configuring a controlled-atmosphere room to store apples for several months. Which environmental conditions best slow respiration and ripening while avoiding storage disorders? Select all that apply.
    High relative humidity around 90 to 95 percent; Oxygen reduced to a few percent but not completely removed; Temperature close to just above freezing
15. A small-scale processor wants to produce a clear, bright apple juice rather than a cloudy one. Which step is most critical for achieving high clarity?
    Application of pectinase enzymes followed by fine filtration
16. Arrange these key phases in the annual management cycle of a temperate-climate apple orchard, starting from late winter and ending at harvest.
    Correct order: Dormant pruning of trees → Bloom and pollination management → Fruit thinning on young clusters → Pest and disease monitoring during the growing season → Harvest of mature fruit
17. A grower plants seeds from a favorite apple variety and finds that the seedlings all produce very different fruit. Which biological characteristic of apples best explains this high variability in seedling offspring?
    High genetic heterozygosity and regular cross-pollination
18. A cider maker has a very low-tannin, low-complexity base juice and wants to improve structure by blending in a traditional bittersweet cider apple. Which flavor and tannin profile best matches a bittersweet type?
    High tannin with low to medium acidity