Tallest gymnosperms is:
(A) Haemotoxylon campechianum
(B) Tectona grandis
© Sequoia sempervirens
(D) Abeis balsamea
Dendrochronolgy is the study of:
(A) height of a tree
(B) Diameter of a tree
© Age of a tree by counting the number of annual rings
(D) NOne of the above