Answer:
If you were looking in a newly discovered tree species for evidence of the annual activity of the vascular cambium, you would look for growth rings or annual rings.
Step-by-step explanation:
The vascular cambium is a layer of cells in the stems and roots of woody plants that is responsible for secondary growth. It produces new xylem cells towards the inside of the stem and new phloem cells towards the outside. Each year, the vascular cambium adds a new layer of cells, resulting in the formation of growth rings.
By examining the cross-section of a tree trunk or a stem, you can observe distinct concentric rings known as growth rings or annual rings. These rings represent the annual activity of the vascular cambium. The width and characteristics of these rings can provide information about the age of the tree and the environmental conditions it experienced during each growth period.
The presence of growth rings is a reliable indicator of the annual activity of the vascular cambium in a tree species, and studying them can help understand the growth patterns and age of the tree.