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Chp. 35 Plant Magic
Wcjc- Lanom
40
Biology
Undergraduate 1
03/18/2013

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Term
What do roots do?
Definition
Anchor plant, absorb minerals and H2O, and store organic nutrients
Term
Taproot System
Definition
1 main vertical root with lateral/branch roots
Term
Adventitious roots
Definition
Comes from stem/leaves
Term
Where does the absorption of H20 occur?
Definition
Occur near root hairs
Term
Nodes
Definition
points at which leaves are attached
Term
Internodes
Definition
Segments between the nodes
Term
Axillary Bud
Definition
Structure with potential to be a lateral shoot/branch
Term
Apical Bud/Terminal Bud
Definition
near the shoot tip-is the elongation of young shoot
Term
Apical Dominance
Definition
Evolutionary adaption that insures the plants grow in height then width
Term
Leaf/blade
Definition
main photosynthetic organ
Term
Petiole/Stalk
Definition
Join leaf to node of stem
Term
What describes a monocot?
Definition
parallel veins, 1 cotyledon, petals in multiples of 3,fibrous root system
Term
What describes a eudicot?
Definition
branching veins, tap root system, petals in multiples of 4 or 5, 2 cotyledon
Term
What are the tissue systems?
Definition
dermal, vascular, and ground
Term
Cuticle
Definition
non-woody plants-waxy coating that prevents water loss
Term
Periderm
Definition
woody plants- replaces epidermis in older regions of stems/roots
Term
Triochomes
Definition
woody plants-outgrowths of shoot epidermis and helps with insect defense
Term
What is vascular tissue?
Definition
Carries material between shoots/roots
Term
Xylem
Definition
water/dissolved mineral-roots TO shoot
Term
Phloem
Definition
Transport organic nutrients whereever
Term
Stele
Definition
vascular tissue of stem/root collection
Term
Pith
Definition
internal to vascular tissue...ew these are getting confused go look at diagrams
Term
Sclereids
Definition
short/irregular in shape and thick lignified 2nd walls
Term
Fibers
Definition
Long, slender threads
Term
Indeterminate Growth
Definition
plant the grows throughout life
Term
Determinate Growth
Definition
Plants ceasing to grow at certain size
Term
Annuals
Definition
Life cycle in a year or less
Term
Biennials
Definition
Require 2 growing seasons
Term
Perennials
Definition
Live for many years
Term
Meristems
Definition
Perpetually embyonic tissue that allows for indeterminate growth
Term
Apical meristem
Definition
tips of roots/shoort and at axillary buds of shoots
Term
primary growth
Definition
apical meristems elongate shoots/roots
Term
lateral maristem
Definition
thickness to wood-secondary growth
Term
What are the 2 different lateral meristems?
Definition
Vascular Cambium- adds later of vascular tissue in wood
Cork Cambium-replace epidermis with periderm so it is thicker and tougher
Term
Endodermis
Definition
innermost later of cortex
Term
Leaf promordia
Definition
leaf development along the sides of apical meristem
Term
Axillary buds
Definition
development from meristematic calls lef at bases of leaf primordia
Term
stomata
Definition
allow CO2 exchange between air and photosynthetic cells in leaf
Term
Guard Cells
Definition
regulate opening and closing of stomata
Term
Mesophyll
Definition
ground tissue in leaf-sandwiched between upper and lower epidermis
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