CSB340H1 Lecture Notes - Lecture 2: Meristem, Bioenergy, Radicle
19 Dec 2018
School
Department
Course
Professor
Document Summary
Plants aren"t just important for food: materials, bioenergy, pharmaceuticals. Per capita grain yield increased exponentially before plateauing. 2 connected branching systems extended by terminal (apical) meristems. For animal, having chloroplasts wouldn"t have much use: not enough energy from it. Plant cells: have cell walls -> encaged , can extend but not move, because they can"t move, must grow in a way that"s different from animals. Animal cells: can move around and slide against each other, make morphological movement. Global growth vs. local growth: meristems in plants. Animal cells can form any structure of life by rearranging themselves: e. g. embryo. Plants can"t grow this way: grow by having additions on surface, no embryogenesis. Seedling = product of embryogenesis: embryonic root = radicle, embryonic shoot = hypocotyl, embryonic leaves = cotyledon. Some product of stem cells at leaves = shoot meristem: at tip of root, known as root meristem.
