WSET Level 2 Practice Question · Episode 6
Show Answer & Explanation (try the quiz first)
Practice Question
Which of the following is NOT a necessary component for a vine to produce sugar through the process of photosynthesis?
- A. Sunlight
- B. Water
- C. Carbon Dioxide (CO2)
- D. Strong Wind
Answer & Explanation
Answer: D. Strong Wind Explanation: A vine performs photosynthesis using sunlight, water, and carbon dioxide to create sugars within the grape. Additionally, Heat is required to drive the vine's metabolic processes. Conversely, strong winds are considered a threat that can damage leaves, inhibit growth, or even shut down photosynthesis by cooling the vine too much.
Expert Exam Tip
[Trap]: Do not assume that "The more fertile the soil, the better the quality of the grapes." Over-fertilized soil leads to excessive 'vigour' (too many leaves), while the best wines often come from vines that must 'struggle' slightly in nutrient-lean soils. [Tip]: In the L2 exam, if you see the term 'Photosynthesis', immediately connect it to 'Sunlight', 'CO2', and 'Sugar'. This scientific link is the key to understanding ripening.