Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
Above ground part, stems, leaves and flowers. Framework for upright growth.
|
The shoot system
|
|
Below ground parts. Absorb water and nutrients, anchor,storage of photosynthetic products
|
The root system
|
|
Three processes involved in growth
|
Cell division
Cell elongation Cell differentiation |
|
Only occurs at the meristems
|
cell division
|
|
Activity here results in primary growth. A plant only lengthens here.
|
Apical Meristem
|
|
Activity here results in secondary growth. A thickening of older roots and shoots. Vascular cambium. cork cambium.
|
Lateral Meristem
|
|
Most common type of tissue. Composes most of the soft plant parts. Metabolically active and living.
|
Parenchyma.
|
|
Structural support for soft, non-woody plant organs. Living tissue. Elongated cells. does not interfere with growth. "Strings" of celery.
|
Collenchyma
|
|
Strong support for plant parts. Thick, lignified cell walls. Dead at maturity.
|
Sclerenchyma
|
|
Long, tapered cells
|
Fibers
|
|
Stubbier cells
|
Sclereids
|
|
Conducts water and dissolved minerals. Dead at maturity.
|
Xylem
|
|
Transports sugars. Living tissue.
|
Phloem
|
|
Covers and protects plant surfaces.
|
Epidermis
|
|
Three plant tissue systems.
|
The ground tissue system
The vascular tissue system The dermal tissue system |
|
apical dominance. Main zone of primary growth.
|
Terminal buds
|
|
Dormant shoots. Forms in a leaf axil
|
Lateral buds
|
|
veins are netlike
|
Dicots
|
|
Veins are parallel
|
Monocots
|
|
Outermost layer
|
Epidermis
|
|
Root cortex is below the epidermis for:
|
storage
|
|
Inner layer of cortex. controls water flow in the vascular tissues
|
endodermis
|
|
Vascular cylinder.
|
Stele
|
|
outer-most layer of stele. Gives rise to lateral roots.
|
pericycle
|
|
Ground tissue. not in dicot roots.
|
pith
|
|
Secondary xylem
|
Wood
|
|
Secondary phloem
|
Inner bark
|
|
Results from growth in the vascular cambium . concentric rings of secondary xylem. alternating bands of early and late wood.
|
annual rings
|
|
spring. pail and less dense
|
early wood
|
|
autumn, darker, more dense.
|
Late wood.
|