Chapter 33, Problem 1ITD

Summary Introduction

To review:

The experiment was done by the researchers to see the growth of plants with wider girth in warmer areas in Siberian pines (Pinus sibirica) in Tarbagatay pass region in Mongolia. They estimated that the growth of trees is reverse in cooler areas. It was assumed that with the increasing temperature, trees are getting longer and girth is becoming wider. The graphical data was prepared by taking account of the ring widths of the plants and years of growth. The conclusion has to be inferred from the experiment on the basis of the graphical data.

Introduction:

The study of growth rings or annual growth rings that are present in the secondary root xylem is called herbchronology. These rings are mostly present in the perennial herbaceous plants. The annual growth rings are counted and it gives a rough idea about the age of the perennial plant.