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Plant Tissues (Meristematic tissue (Vascular Cambium (thin cylinder of…
Plant Tissues
Meristematic tissue
lateral
increase diameter of plants
Found in roots and stems
Cork Cambium
Protect apical meristem
These cells form a protective layer on the outside of stems and roots & rootcap
Produce cells that develop a tough cell wall
Intercalary
Found at one or more location along a monocot stem.
Produce cells that promotes growth
Vascular Cambium
thin cylinder of meristematic tissue
run the length of roots or stems
Produce new transport tissues
THE ADDITION OF NEW VASCULAR TISSUE INCREASES THE DIAMETER OF THE STEMS
Apical
Found in tips of stems
AND THE TIPS OF THE ROOTS
Promote primary growth in length
Dermal Tissue
Guard Cells
Opening and closing of stomata
Aid in gas exchange
THE CHANGE IN WATER PRESSURE IN THE CELLS WILL LEAD TO THEOPENING AND CLOSING OF THE STOMATA
Root Hairs
Increase surface area for water absorption
Fragile extension of root epidermal cells.
Underground
PROJECTIONS FROM THE ROOT
Trichomes
Provide protection against foreign by releasing chemicals
Hair-like projections/fuzzy appearance
Help cool some plants by reflecting light
Epidermis
prevent foreign materials and water loss
CAN PRODUCE CUTICLE
Vascular tissue
Xylem
Transport water
Vessel elements
stacked end to end
lack end walls allowing free movement of water
make up
MOST
xylem in flowering plants
Tracheids
fiber sclerenchyma cells
with pitted end and end walls
make up xylem in flowering and nonflowering plants
Phloem
2 types of cells :
Sieve tube members
Contain cytoplasm
Lack nuclei & ribosomes when mature.
Companion cells
Have a nucleus
Preform cell functions for both cells
Transport nutrients from leaves and stems to roots and the other way around.
Main food carrying tissue in vascular plants.
Hallow tubes
Deliver food
Transport water
Ground Tissue
Multifunctional
Storage
Photosynthesis
Support
Consist of all types of cells
Found all over the plant
Najd AlHammad
AlFelwa AlOhali
Alanoud AlJeraisy
Lateefah AlSwailem
Sara AlZaagi
11-C
