Question: what are terpenoids in plants?
Answer: The terpenoids (/ˈtɜːrpɪnɔɪd/ TUR-pin-oyd), sometimes called isoprenoids, are a large and diverse class of naturally occurring organic chemicals derived from the 5-carbon compound isoprene, and the isoprene polymers called terpenes. Most are multicyclic structures with oxygen-containing functional groups.