Primary versus Secondary Growth. Origins of Primary Growth: Apical and Primary Meristems.

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Primary versus Secondary Growth

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Transcript of Primary versus Secondary Growth. Origins of Primary Growth: Apical and Primary Meristems.

Page 1: Primary versus Secondary Growth. Origins of Primary Growth: Apical and Primary Meristems.

Primary versus Secondary Growth

Page 2: Primary versus Secondary Growth. Origins of Primary Growth: Apical and Primary Meristems.

Origins of Primary Growth:Apical and Primary Meristems

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Origins of Secondary Growth:Lateral Meristems

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Vascular Cambium Activity

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Relationship between Primary and Secondary Growth (a)

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Relationship between Primary and Secondary Growth (b)

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Relationship between Primary and Secondary Growth (c)

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Relationship between Primary and Secondary Growth (d)

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Relationship between Primary and Secondary Growth (e)

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WOOD THREE WAY VIEWS

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TRANSVERSE VIEW

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RADIAL VIEW

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TANGENTIAL VIEW

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GYMNOSPERM WOOD(INCLUDING PINE)

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Gymnosperm Wood

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Bordered Pits

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RESIN DUCTS

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RESIN DUCTS

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Three-Way Views

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Gymnosperm Radial Cut

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Gymnosperm Tangential Wood

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Gymnosperm Transverse Wood

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Gymnosperm Annual Rings

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Gymnosperm Heartwood versus Sapwood

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ANGIOSPERMS (INCLUDING OAKS AND MAPLES)

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VESSELS AND TRACHEIDS

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DIFFUSE POROUS VS. RING POROUS

OAKMAPLE

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Three-Way Views

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Angiosperm Tangential Cut

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Angiosperm Tangential Cut

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Angiosperm Radial Cut

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Angiosperm Transverse Cut

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Angiosperm Transverse Cut

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Angiosperm Annual Rings

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Angiosperm Heartwood versus Sapwood

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SOFTWOOD versus HARDWOOD

(= Gymnosperm Wood versus Angiosperm Wood)


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