7 Transpiration:The evaporation of water through the stomates and lenticels of plantsStomataLenticels
8 Roots: Drawing:LD S3: 27174 1. Region of Maturation or Specialization 4. Root Hairs3. Xylem5. Cortex5.5 Region of Elongation2. Epidermal Cells9. Region of Cell Division6. Phloem8. Root Cap7. Apical MeristemCell Division
9 Roots: Region/Zone of Cell Division- Region/Zone of Elongation- Mitotic activity, cells multiply here.Region/Zone of Elongation-Cells elongate and become longer.Region/Zone of Maturation/Specialization-Abundant root hairs, cells differentiate-become specialized
10 Roots: Root cap- Root Hairs- LD S3: 1931 Covers and protects the end of the root tip, thick walled dead cells.Root Hairs- LD S3: 1931Projections of epidermal cells.Absorb water and minerals from soil be osmosis, diffusion and active transport.
16 Lab 24 Structure of Roots and Stems parts 1-3 Vocab. Part 1Apical meristemHerbaceous stemWoody stemAlliumRanunculusZea maysMeristemZone of elongationZone of maturationRoot capPart IIEndodermisXylemPhloemPericycleVascular cylinderCortexEpidermisStarch grainsPart IIIRoot hairs
17 Lab 24 Structure of Roots and Stems Monocot.Dicot.
25 Parts of a StemBark consists of:Epidermis, Phloem, Cambium
26 Annual Growth RingsHow many years is shown by this tree section ?
27 Growth Tissues Cambium (Lateral meristem) Apical meristem Causes increase in diameterTwo typesVascular cambium-makes new xylem and phloemCork cambium-makes new corkApical meristemCauses increase in lengthFound at stem and root tips.
28 Functions of Stems: Support Transport Storage Some photosynthesis Some Respiration
39 LEAVES: Epidermis- Palisade Layer (Mesophyll)- Secrets a waxy cuticle layerNo chloroplastsOne cell thickLower contains stomates and guard cellsPalisade Layer (Mesophyll)-Main region of photosynthesis.Just under upper epidermis.Dense layer of cells w/ chloroplasts.Spongy Layer (Mesophyll)-Underneath palisade layer-fewer chloroplasts less photosynthesis.Air spaces, storage and diffusion of gases.
40 LEAVES: Veins-composed of Guard Cells and Stomates- Xylem & Phloem Control the exchange of gasses with the atmosphere. Oxygen, Carbon Dioxide, WaterOpen during day, closed at night.