Roots

Front 1

3 zones involved in primary root growth

Back 1

1) zone of cell division
2) zone of cell elongation
3) zone of cell differentiation

Front 2

types of meristematic tissue in zone of cell division

Back 2

root apical meristem and primary meristems (protoderm, procambium, ground meristem)

Front 3

definition of zone of cell elongation

Back 3

region where cells elongate to up to 10x their original length

Front 4

definition of zone of cell differentiation

Back 4

region where new cells become specialized, primary meristems give rise to specialized tissue (vascular, ground, epidermal)

Front 5

functions of root

Back 5

1) anchor plant
2) absorption of water and minerals
3) prevents erosion of soil

Front 6

types of roots

Back 6

1) tap root
2) fibrous root
3) adventitious root

Front 7

Tap root: function, structure, type of plants that have tap root

Back 7

function: anchors plant, store food (examples: carrots, potatoes)
structure: one large vertical root, can produce secondary roots
usually in: dicots

Front 8

fibrous roots: function, structure, type of plants that have fibrous roots

Back 8

function: prevents soil erosion
structure: thin spreading, not deep
usually in: monocots

Front 9

adventitious roots: function, structure

Back 9

function: support
structure: arises from ground structures (such as stems)

Front 10

root hairs

Back 10

extensions of root epidermal cells that increase surface area for water/mineral absorption

Front 11

root cap

Back 11

covers and protects root apical meristem as root elongates and pushes through soil

Front 12

endodermis

Back 12

innermost layer of cortex, provides selective barrier for substances entering vascular tissue

Front 13

casparian strip

Back 13

continuous band of wax associated with endodermis, contributes to selective barrier

Front 14

pericyle

Back 14

outermost layer of stele

Front 15

root hairs

Back 15

extensions of root epidermal cells that increase surface area for water/mineral absorption

Front 16

root cap

Back 16

covers and protects root apical meristem as root elongates and pushes through soil

Front 17

endodermis

Back 17

innermost layer of cortex, provides selective barrier for substances entering vascular tissue

Front 18

casparian strip

Back 18

continuous band of wax associated with endodermis, contributes to selective barrier

Front 19

pericyle

Back 19

outermost layer of stele

Front 20

stele

Back 20

vascular cylinder

Front 21

area from where lateral roots arise

Back 21

pericycle