Plant Structure Flashcards
Root Functions
• Anchor plant into soil
•Absorb water + minerals
• Transport absorbed materials to shoot
•Store food
Four Root Zones
- Differentiation Zone
- Elongation Zone
- Meristematic Zone
- Protection Zone
Function of Differentiation Zone
Cells develop into 3 different types of tissue. Dermal, Ground, and Vascular tissue.
Function of Elongation Zone
Cells increase in size
Function of Meristematic Zone
New cells are produced by mitosis
Function of Protection Zone
A root cap protects the cells as the root pushes through the soil.
3 Types of Tissue in a Plant
- Dermal Tissue
- Ground Tissue
- Vascular Tissue
Function of Dermal Tissue
Covers and protects the plant, controls gas exchange and water absorption in the root.
Function of Ground Tissue
Carries out basic metabolic functions.
Function of Vascular Tissue
Provides transport pathways for water and nutrients.
Stem Functions
Transport
Function + Location of Lenticels
Function = Gas Exchange
Location = Stem of plants
Difference in Organisation of Vascular Tissue in Root vs Stem
Root = vascular tissue is located in the centre of the root
Stem = vascular tissue is located in bundles arranged in a circular pattern away from the centre of the stem
Function of Xylem - Living or Non-Living?
Carry Water and Minerals, Non-Living
2 Types of Xylem Tissue Structure
Tracheids
Vessels
