Which chemical class is linked to the scent of lemons, roses, oranges, and mint?

Which chemical class is linked to the scent of lemons, roses, oranges, and mint?

• A. Aldehydes
• B. Esters
• C. Terpenes
• D. Aromatics

Answer: (C)

Terpenes are the large family of natural compounds responsible for many plant scents. They’re built from isoprene units, and the aromas come from different terpene structures. The citrus smell of lemons and oranges comes largely from limonene, a monoterpene. The floral scent of roses involves rose terpenes such as citronellol, geraniol, and linalool, while mint aromas come from menthol, another terpene derivative. Because these distinctive scents across lemons, oranges, roses, and mint are tied to terpenes, this class best explains the linkage. While aldehydes and esters can contribute fruity or floral notes, and aromatics is a broader label, terpenes specifically account for these common plant scents.

Terpenes are the large family of natural compounds responsible for many plant scents. They’re built from isoprene units, and the aromas come from different terpene structures. The citrus smell of lemons and oranges comes largely from limonene, a monoterpene. The floral scent of roses involves rose terpenes such as citronellol, geraniol, and linalool, while mint aromas come from menthol, another terpene derivative. Because these distinctive scents across lemons, oranges, roses, and mint are tied to terpenes, this class best explains the linkage. While aldehydes and esters can contribute fruity or floral notes, and aromatics is a broader label, terpenes specifically account for these common plant scents.