01:119:116 Study Guide - Midterm Guide: Meristem, Vascular Cambium, Phloem
28 Nov 2017
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Document Summary
Primary root originates in seed embryo. Lateral roots grow + branch off primary roots. Root hairs thin, fingerlike extensions of root epidermal cells. Increases surface area increases absorption increases mineral + water uptake. Petiole = stalk joins leaf to stem at node. Veins vascular tissue for conduction and support; patterns between monocots + dicots. Monocots parallel major veins same distance as leaf. Maximizes light uptake for photosynthesis by leaves. Nodes point where leaves are attached. Apical bud growing shoot tip lots of young shoots develop from here. Axillary buds form lateral branches; helps with photosynthesis. Made of dead tissue cells; water and minerals go up roots to shoots. Central part of the root or stem; consists of all vascular tissue of root/stem. Root stele solid central cylinder with xylem and phloem. Single layer of tightly packed cells. (external to vascular system) stores carbs and other substances. Sun rises photosynthesis stomata open transpiration occurs creates tension.
