Photomicrograph of growth rings of pine wood, transverse section, mag. 5x (at 24 x 36 mm). Shown are at least five growth (annual) rings of xylem. Each ring is formed by tracheids of varying diameters. The tracheids formed in the spring areof larger diameter than those formed in the summer due to d ifferences in water availability. (c) Herve Conge
Credit
ISM
/ Hervé CONGE
Dimensions
4252 x 2835 pixels
Print Size @ 300 dpi
14 x 9 inches / 36 x 24 cm