Plant Anatomy
description
Transcript of Plant Anatomy
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Plant Anatomy
Vegetative and Reproductive Structures
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What are vegetative structures (parts) and the Vegetative Stage of
a Plant?
• Vegetative plant parts of the plant that help it to through its daily processes.
• The vegetative stage is when the plant is growing and not ready or getting ready for reproduction.
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What are reproductive structures (parts) and the reproductive stage
of plants?• The reproductive parts of a plant are the
plant structure used for sexual reproduction (making more plants).
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Main Parts of a Leaf
Tip/Apex
Midrib
Margin
Veins
Base
Petiole
Blade
Leaf
Courtesy of Corinne Banowski
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Leaf Forms
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Leaf Veination
Dichotomous Veination
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Types of Leaves
Needle like leaves
Scale like leaves
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Internal Parts of A LeafPetiole
Blade
CuticleUpper EpidermisPalisade Mesophyll
VeinSpongy Mesophyll
Lower Epidermis
Guard CellStomataAir
Spaces
Stoma, singular
Courtesy of Wm. C. Brown Publishers
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Leaf Attachments
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Leaf Function
• Photosynthesis– Make food (sugar
“glucose”)
• Store water• Reproduce• Protect
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Modified Leaves
• Bulbs
• Bracts
• Spines
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External Stem Anatomy
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Internal stem anatomy
Monocots=grasses, palm trees, corn, ect…
Dicots=trees, shrubs, “leafy” ect…
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Function of Stems
• Transport (food down, water up)
• Support (hold up leaves)
• Store (food and water)
• Protect (thorns)
• Reproduction (stolons)
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Modified Stems
• Thorns
• Stolons
• Tuber
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Root Anatomy
• Primary root: The first root to emerge from a seed
• Secondary root: Roots that branch off of that root
Function
•Absorb water
•Anchor plant
•Store food and water
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Flowers
• Used for sexual reproduction
• They make seeds
• Some are male, Some are female and some are both.
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Parts of a Flower
StamenAnther
Filament
PetalsSepals
Pedicel
Stem of the flower
Ovule
Receptacle
Swollen base where are parts attach
Stigma
Style
Ovary
Pistil
Courtesy of McGraw Hill Publishers
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Pollination
• Pollen (male) lands on female flower and fertilizes egg/ovule (female) and then makes seeds
• Pollinators Wind, insects (bees, ants, flies, ect…), bats, birds, butterfly) ect…
• Cross pollination: between separate plants
• Self pollination: pollinates itself
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Types of flowers
• Perfect: have stamen and pistol (both sexes, hermaphrodite)
• Imperfect: missing a male or female part
• Complete: has everything
• Incomplete is missing something, anything.