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Structure of Woody Plants (Layers (Pholem (Transport tube for moving…
Structure of Woody Plants
Layers
Pholem
Transport tube for moving sugars
Distribute foods
Pith
To store and transport nutrients
Xylem
Transport tube for water and minerals from the root
Epidermis or Bark
Outer layers of stem for production
Cortex
Transport materials into the central cylinder of the root
Through diffusion and stores food in the the form of starch
Cambium
Helps in high cell growth
Functions
To transport water and dissolved minerals salts from the roots to rest of the plants
Allowing photosynthesis to occur
To transport food made by the leaves to the rest of the plants
Transport substances throughout the plant
Holds leaves up to the sun
produce organs like the branches,leaves and flowers.
Definition of woods
Heart wood
Near the center of the stem
Contains old xylem that no longer conducts liquids
Sap wood
Actives in fluid transport
surrounds heartwood
Produces by the vascular cambium
It is actually layers of secondary xylem
Growth
Primary Growth
Takes in all seeds plants
Results of elongation of cells
Produced in the meristem
Epidermis
Cortex
Pith
primary Phloem
Vascular Cambium
Primary xylem
Secondary growth
rare in monocot
An increases in the thickness of stems and roots
common among dicots and gynosperm
Primary xylem
In conifers and dicots
cortex
Pith
Primary phloem
Secondary xylem
Secondary Phloem
Contains
buds
Contains apical meristem
That produces new stem and leaves
Nodes
Where leaves ae attached
Tissue Elements
Vessel element
Xylem cells arranged end to end on the top of one another
Tracheids
Long, narrow xylem cells with opening in their cell walls
Seive tube elements
The main phloem cells
lignin
Substances in the cell walls of dead tracheids
Due to tracheids it makes wood though
Companion cells
And the movement of substances
Support the phloem cells
