Arboriculture Midterm 1 (A+ Graded Already)

meristem correct answers specialized zone for cell division differentiation correct answers changes cell structure to form a specialized cell tissue correct answers a group of specialized cells forming organs primary meristems correct answers shoots and roots secondary meristems correct answers diameter (lateral) growth functions of xylem correct answers conduct, support, storage, defense composition of xylem correct answers tracheids, fibers, parenchyma cells, vessels (hardwoods only) function of phloem correct answers transport carbohydrates composition of phloem correct answers conifers - sieve cells hardwoods - sieve tube elements and companion cells function of bark correct answers moderate temperatures, defense, reduces water loss Where does the trunk end and the branch begin? correct answers First, the branch lays down a layer of wood then the trunk lays down another forms a cross grain zone of massive strength as the tree grows, the connection gets stronger deciduous leaves correct answers are annually shed evergreen leaves correct answers are retained for longer than a year What percentage of roots are 6 in beneath the surface correct answers 50 the root crown is how much bigger than the crown correct answers 2-3x root hair zone correct answers -where water is taken up by the entire root -virtually all mineral uptake -single cells -very delicate -live for 1 to 10 days function of roots correct answers anchorage, storage, conduction, absorption