krt-2010 1 plant structure. krt-2010 2 the "typical" plant body the root system...
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PLANT STRUCTURE
PLANT STRUCTURE
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The "Typical" Plant BodyThe "Typical" Plant Body
The Root SystemThe Root System Underground (usually) Underground (usually) Anchor the plant in the soil Anchor the plant in the soil Absorb water and nutrients Absorb water and nutrients Conduct water and nutrients Conduct water and nutrients Food Storage Food Storage
The Shoot SystemThe Shoot System Above ground (usually) Above ground (usually) Elevates the plant above the soil Elevates the plant above the soil Many functions including: Many functions including:
photosynthesis photosynthesis reproduction & dispersal reproduction & dispersal
food and water conduction food and water conduction
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The Body of seed plantThe Body of seed plant
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Plant StructurePlant Structure
A. Classification of Plants A. Classification of Plants
1. Some plants are 1. Some plants are non-vascularnon-vascular (=bryophytes) (=bryophytes)2. Some plants are 2. Some plants are seedless, vascular plantsseedless, vascular plants (e.g., (e.g.,
ferns)ferns)3. Most plants are 3. Most plants are seed-bearing, vascular plantsseed-bearing, vascular plants- gymnosperms (no flowers, e.g., conifers)- gymnosperms (no flowers, e.g., conifers)- angiosperms (all produce flowers: dicots and - angiosperms (all produce flowers: dicots and
monocots)monocots) B. Structure of Flowering Plants (= angiosperms) B. Structure of Flowering Plants (= angiosperms)
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Angiosperms, flowering plants, are divided into two groups: Angiosperms, flowering plants, are divided into two groups:
monocots and dicotsmonocots and dicots
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Monocots vs. Dicots Monocots vs. Dicots MonocotsMonocots DicotsDicots
Floral Floral Arrangement :Arrangement :
3's 3's 4's and 5's4's and 5's
Leaf Venation :Leaf Venation : ParallelParallel NetNet
Vascular bundlesVascular bundles ScatteredScattered RingRing
HabitHabit Herbaceous Herbaceous Herbaceous + WoodyHerbaceous + Woody
RootsRoots FibrousFibrous Tap rootTap root
GrowthGrowth Primary onlyPrimary only Primary and Primary and SecondarySecondary
Examples:Examples: Grass, Palm, Grass, Palm, Orchid Orchid
Oaks, Roses, Oaks, Roses, SunflowersSunflowers
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Monocots have their flower parts in threes or multiples of three; example Monocots have their flower parts in threes or multiples of three; example the tulip and lily (the tulip and lily (Lilium Lilium ). ).
Dicots have their flower parts in fours (or multiples) or fives (or Dicots have their flower parts in fours (or multiples) or fives (or multiples). Examples of some common dicot flowers include the multiples). Examples of some common dicot flowers include the
geranium, and citrus.geranium, and citrus.
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KRT-2010KRT-2010 1010the scattered vascular bundles of the corn stem the ringed array of vascular bundles in this
dicot stem (Medicago).
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Anatomy Of Monocot StemsAnatomy Of Monocot Stems
A cross section of the stem of corn (Zea mays) showing parenchyma tissue and scattered vascular bundles. The large cells in the vascular bundles are vessels
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Plant stemPlant stem
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SpermatophytesSpermatophytes
Includes flowering or seed-bearing plants.Includes flowering or seed-bearing plants. The two subdivisions are….The two subdivisions are….
GymnospermsGymnosperms AngiospermsAngiosperms
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Plant Characteristics
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Identifying PlantsIdentifying Plants
Physical characteristics are used to identify Physical characteristics are used to identify plants which include….plants which include…. Life CycleLife Cycle FormForm Foliage RetentionFoliage Retention Plant PartsPlant Parts Use & LocationUse & Location
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Life CycleLife Cycle
AnnualsAnnuals Plants that complete their life cycle in one Plants that complete their life cycle in one
year.year. BiennialsBiennials
Plants that complete their life cycle in Plants that complete their life cycle in two years.two years.
PerennialsPerennials Plants that live more than two years.Plants that live more than two years.
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Growth HabitsGrowth Habits
TreesTrees ShrubsShrubs VinesVines
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Growth FormsGrowth Forms
ColumnarColumnar SpreadingSpreading WeepingWeeping
RoundRound OvalOval PyramidalPyramidal
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Growth FormsGrowth Forms
Spreading
Columnar
Weeping
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Growth FormsGrowth Forms
Round Oval Pyramidal
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Foliage RetentionFoliage Retention
DeciduousDeciduous Loses leaves during the dormant season.Loses leaves during the dormant season.
EvergreenEvergreen Keeps leaves and remains green year-round.Keeps leaves and remains green year-round.