describe the acrivity of cambium in temperate trees. how do you determine the age of a tree?

Spring Wood and Autumn Wood

• The activity of cambium is under the control of many physiological and environmental factors.

• In spring season, cambium is very active and produces a large number of xylary elements with wider vessels. This wood is called spring wood or early wood. It is lighter and has lower density.

• In winters, xylem is less active and forms fewer xylary elements with narrow vessels. This wood is called autumn wood or late wood. It is darker and has higher density.

• Annual ring: When two kinds of wood appear in alternate concentric rings; these help us to estimate the age of a tree