BIOL 2004 Lecture Notes - Lecture 10: Casparian Strip, Meristem, Root Cap
12 Apr 2016
School
Department
Course
Professor
Document Summary
Lecture 10: the primary plant body (roots, stems and leaves) Funcions: anchor the plants; absorb and conduct water and minerals. Produce hormones and other substances (cytokinin is made in the roots and used in the shoots) Two paterns of root growth: taproot, fibrous. Roots can go very deep but most stay near the surface because that is where the nutrients are. One main root that develops from the radicle and makes branches called lateral roots (which then make their own branch roots) Roots will always grow down because of gravitropism and the amyloplasts that will grow with gravity and without gravity but will always grow down. Numerous from the botom part of the stem. Prop roots are considered ibrous roots because they develop from elsewhere in the plant. Zone of cell division: root apical meristem (very botom of the root on top of the root cap) and the three primary meristems.
