Question

Dendrochronology is the_________________.

• A. Histological analysis of the annual rings signifying the age of tree.
• B. Chemical analysis of the chlorophyll content in a plant.
• C. Statistical analysis of the amount of food prepared by the plant, the amount is used, and the quantity stored.
• D. Study of the light and the dark reactions of photosynthesis.

Answer 1

The correct option is A Histological analysis of the annual rings signifying the age of tree.

In the region of secondary xylem, the cambium is less active in autumn and more active in spring. Thus, in each year two zones of secondary xylem are formed and both can be easily demarcated. These two zones constitute an annual or growth ring. By counting the number of annular rings, it is possible to know the age of a plant. This study is known as dendrochronology.

Thus, the correct answer is option A.