Questions › Category: Civil Engineering › The inner annual rings surrounding the central portion or core of a tree is 0 Vote Up Vote Down VideRime Staff asked 5 years ago The inner annual rings surrounding the central portion or core of a tree is a) pith b) sap wood c) heart wood d) medullary rays Share this Now with Friends: Share on WhatsApp (Opens in new window) WhatsApp Share on Telegram (Opens in new window) Telegram More Related 1 Answers 0 Vote Up Vote Down VideRime Staff answered 5 years ago c) heart wood Share this Now with Friends: Share on WhatsApp (Opens in new window) WhatsApp Share on Telegram (Opens in new window) Telegram More Related