ISA Arborist Study Guide | 80 Questions with 100 % correct Answers | Verified

Bark, phloem, cambium, xylem - When cutting through a tree with a chain saw or drilling into a tree, you would pass through (in order) Growth may be stimulated in lateral buds - If the terminal bud is removed in pruning: The growth rings of a tree: - Visible because of the rapid growth rate of earlywood relative to latewood, can be counted on to approximate trees age, can give information about growth conditions in previous years. Cambium - layer of cells is responsible for outward growth and increased girth of tree. Mycorrhizae are: - A symbiotic relationship between fungi and roots. Douglas-fir (Pseudotsuga menziesii) differs from balsam fir (Abies balsamea) in that: - They are not in the same genus. Opposite leaf arrangement is: - When two leaves and/or buds are located at the same node on a twig. Quercus rubra - Scientific name of Red Oak. Quercus (Oak) - This genus of tree usually does not have an opposite leaf arrangement. Pines - These conifers have needles in bundles. Available oxygen and water - The primary factor in controlling the depth, spread, and distribution of tree roots in the soil is/are: