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Plant tissue - Coggle Diagram
Plant tissue
Epidermis
protective layer
protect against - water loss and parasatic fungi
no inter-cellular spaces
outer and side wall - thicker than inner wall
has stomata
swelled up -stoma open
cell wall - suberin celss
are pore in epidermis
shrinked - stoma close
Meristamatic
Apical
responsible for growth of apex
two types
Shoot AM
Root AM
Intercallry
increasing the length of node
Lateral
widening of trunk/increasing the girth
Permanent
Simple
Paranechyma
Arenchyma
hydrophiltic plants
Chlorenchyma
help in photosynthesis
Points
abundant
storage
mechanical support
live cells and loosely
Collenchyma
flexibility
live cells
cells thickened at corners
little inter-cellular space
Scierenchyma
provide hardness
dead cells
long narrow cells
walls thickened due to lignin
no inter-cellular space
ex-coconut husk
Complex
Xylem
transport water & mineral
uni-directional
Parts
Tracheid vessels - live cells
Xylem parenchyma - dead cells
Xylem fibers - dead cells
Phloem
for food movement - bi- directional
Parts
Seive tubes - dead cells
Companion cells - dead cells
Fibers - live cells
Parenchyma - store starch and protien