BIOL 1202 : Exam 4 Notes
Document Summary
Wood is secondary xylem: material in tree is dead even when the tree is alive, produces more and more dead tissue each year with secondary growth, heartwood: no longer conducts water, but strengthens stem (see fig. Secondary xylem but still used to transport water and minerals: sapwood- conducts water and minerals, know the structure of the tree from the outside to the center. Primary growth in roots: pericycle- outermost layer of stele, see fig. 35. 13: primary growth- roots growing further into the ground. Primary growth in shoots: primary growth in religions, the apical meristem produces the same 3 primary meristems as in the roots. Protoderm: ground meristem, procrabian, dermal, vascular, ground 3 tissue parts of the plant, leaves arise from leaf primordia on the flanks on the apical meristem. Auxillary buds could produce later branches: develop from islands of meristematic cells left at the bases of leaf primordia, fig.
