You have been given a piece of tree trunk, sawed transversely, and are told to examine its structure.You don't see any growth rings and thus conclude that this tree grew in the tropics.You base this conclusion on the fact that only trees from temperate areas have the rings, which are formed when

Question

Quizplus · Accepted Answer

Growth rings are formed by the variation in size of xylem cells with the changing seasons. In tropical areas, where the climate is relatively constant throughout the year, this variation in cell size does not occur, and therefore growth rings are not formed.

You Have Been Given a Piece of Tree Trunk, Sawed