If you were able to walk into an opening cut into the centre of a large redwood tree, when you exited from the middle of the trunk (stem) outward, you would cross, in order, ________.
A) the annual rings, new xylem, vascular cambium, phloem, and bark
B) the secondary xylem, cork cambium, phloem, and periderm
C) the vascular cambium, oldest xylem, and newest xylem
D) the secondary xylem, secondary phloem, and vascular cambium

Question

Quizplus · Accepted Answer

When walking from the innermost part of the trunk outward in a redwood tree, you would first cross the annual rings, indicating the age of the tree. Next, you would pass through the new xylem, which is responsible for transporting water and minerals from the roots up to the leaves. Beyond that, you would cross the vascular cambium, which is the layer of tissue responsible for producing new xylem and phloem. After the vascular cambium, you would cross the phloem, which is responsible for transporting sugars and other nutrients throughout the tree. Finally, you would cross the outermost layer of tissue, which is the bark.

If You Were Able to Walk into an Opening Cut