Please enable JavaScript.
Coggle requires JavaScript to display documents.
Tissues and the Primary Growth of Stems (External Structure of stem (Bud…
Tissues and the Primary Growth of Stems
Meristematic
Apical
Occur in shoot and root tips.
Cytokinesis
Mitosis
Intercalary
Occur between mature tissues.
Regenerate the parts of plants that animal destroyed by grazing.
lateral
Occurs in mature region of shoots and roots.
Called Secondary meristem
Produce Primary tissues
Shoot Apical Meristem
Root apical Meristem
Sub apical
Growing
Dividing
Just below apical meristem.
Permanent
No Cell division in matured cell.
Simple
Single type of cells.
Collenchyma
Chlorenchyma
Support and storage.
Sclerenchyma
Transport and support.
Fibers
Sclereids
Parenchyma
Chlorenchyma
Support and storage.
Complex
More than one type of cells.
Pholem
Companion Cells
Seive Tubes
Pholem Fibres
Pholem Parenchyma
Distributes
Sugars
Minerals
Xylem
Xylem Vessels
Tracheids
Xylem Parenchyma
Parenchyma Tissues
Group of parenchyma cells
Xylem Fibres
Conducts
Water
Minerals
Dermal Tissues
Includes Epidermal Cells.
Properties
Waterproofing
Ingestible by
Animals
Bacteria
Fungi
Chemical composition
Cutin
Waxes
Gas exchange and protection.
External Structure of stem
Bud scales
Modified leaves.
Protection
Leaf axil
Leaves are attached.
Phyllotaxy
Positioning of leaves.
Alternate
opposite
Spiral
Decussate
Distichious
Inernodes
Regions between nodes.
nodes
Leaves attached
rhizomes
Fleshy horizontal stem.
tubers
horizontals positioned
Potatoes
