WSET D1 Wine Production: The Growing Environment Practice Test 2024.

WSET D1 Wine Production: The Growing Environment Practice Test 2024.How can cool temperatures contribute herbaceous aromas to grapes? - ANSWER Cool conditions may hinder the breakdown of methoxypyrazines, What temperature range is optimum for anthocyanin synthesis in black grapes? - ANSWER 15-25°C (59-77°F) How can water stress cause photosynthesis to slow down or stop? - ANSWER The stomata can shut to prevent water loss. The closed stomata limit intake of carbon dioxide, which is needed for photosynthesis. What light level becomes the limiting factor of photosynthesis? - ANSWER If light levels drop below one third full sunshine. What happens to the levels of anthocyanins and methoxypyrazines in black grapes when they're exposed to sunlight? - ANSWER Anthocyanins develop and methoxypyrazines reduce. Which aroma precursor associated with fruity/grapey aromas develops with sunshine exposure? - ANSWER Terpenes Which receives more solar radiation per annum, high or low latitudes? - ANSWER All things being equal, regions at lower latitudes near the Equator receive more solar radiation. Why do regions near the poles receive less solar radiation? - ANSWER The curvature of the Earth means that nearer the poles solar radiation must travel through a larger section of atmosphere to reach the Earth's surface. It also means that the radiation hits the Earth at a low angle, so the radiation is spread over a larger area