basic plant structure. vocabulary germination –hypogeous –epigeous seed structures seed seed...
TRANSCRIPT
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Basic Plant Structure
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Vocabulary
Germination– Hypogeous
– Epigeous
Seed Structures• Seed
• Seed coat
• Cotyledon
• Embryo
• Endosperm• Hypocotyl• Radicle
• Epicotyl (plumule)
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Parts of a seed
• Dicot
• Monocot
Seed coat
Epicotyl
Cotyledons
Hypocotyl
Seed coatEndosperm
Epicotyl
Hypocotyl
RadicleCotyledon
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Seed Germination
Monocot Dicot
Hypogeous
Epigeous
Radicle
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Vocabulary
Shoots• Evergreen/Deciduous
• Annual/Biennial/Perennial
• Xylem (earlywood/latewood)
• Phloem
• Cambium
• Meristem
Shoots• Leaf
• Petiole
• Axillary bud
• Opposite
• Alternate
• Whorled
• Node/Internode
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Leaf Arrangement
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Leaf Morphology
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Leaf Morphology
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Flower Morphology
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Structure: Flowers- missing parts
• Floral Parts Structure Reproduction
• Sepals, Petals, Complete Perfect
Stamens, Pistil
• Sepals, Stamens, Incomplete Perfect
Pistil
• Sepals, Stamens Incomplete Imperfect
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Structure- Compound Flower/ Sunflower
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Structure- Flower- Compound Pistil/ Strawberry
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Structure: Leaf Types
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Structure: Leaf Venation
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Structure: Leaf Arrangement
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Structure: Flower Parts
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Tap root and Fibrous (Diffuse) Root Systems – Both arise from radicle
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Comparison of Root Systems
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Roots: Function
• Roots anchor the plant in the substratum or soil. • Roots absorb water and dissolved nutrients or
solutes (nitrogen, phosphorous, magnesium, boron, etc.) needed for normal growth, development, photosynthesis, and reproduction.
• In some plants, roots have become adapted for specialized functions.
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Buttress Roots
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Developing Root
Stern 2006
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Root Cross Section
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Symbiotic Roots
• Legumes (e.g., pea, beans, peanuts) form root nodules. Mutualism between a plant and bacterium which allows for the fixation of atmospheric nitrogen to form that the plant can utilized. The bacterium is reward with food and a place to live
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Symbiotic Roots • Mycorrhizae or "fungus roots"
where a symbiotic relationship forms between a plant and a fungus.
• In this partnership the fungus provides protection against some types of pathogens and increase the surface area for the absorption of essential nutrients (e.g. phosphorous) from the soil. The plant in return provides food for the fungus in the form of sugar and amino acids