Plant Parts and Functions
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Transcript of Plant Parts and Functions
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Plant Parts and Functions
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Parts of The Plant
Five basic parts•Leaves•Stems•Roots•Flowers•Fruit
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Roots2 Types of Root Systems
Taproot SystemPrimary root grows down from the stem with some small secondary roots forming
Examples: Carrots & Turnips
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RootsFibrous SystemSmall lateral roots that spread out just below the soil’s surface
Examples: Corn & Beans
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Root Functions
1. Absorption of water and nutrients (performed by root hairs)
3. Anchor plant to maintain stability
Roots have 4 primary functions
2. Transportation of water and nutrients to stem
4. Store food and water
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Leaves
Main body of leafAttaches blade to stem
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Important Functions of Leaves
PhotosynthesisProcess that plants use to produce their food
Transpiration
Loss of water and exchange of carbon dioxide
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Parts of the StemNode
Areas where side branches and leaves develop from
InternodeArea between nodes
LenticlesSmall holes located in the stem (breathing pores)
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Functions of the Stem1. Transports water and nutrients from roots to leaves
2. Supports leaves, fruits and flowers
3. Food Storage
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Fruit ClassificationAggregate
Develop from a single flower with many ovaries
Examples: Strawberries & Tulips
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Fruit ClassificationMultiple
Fruit develops from a group of tightly clustered flowers
Examples: Pineapples & Figs
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Fruit ClassificationSimple
Develop from a single ovary
Examples: Cherries & Tomatoes
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Fruit’s FunctionSite of seed production
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Flower PartsPistilFemale part of plant
Consists of:•Stigma•Style•Ovary
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Flower PartsStamen
Male reproductive organ
Consists of:•Anther
•Stamen
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Flower PartsPetals
Highly colored part of the flower, may contain perfume and/or nectar glands
SepalsSmall green structures on the base of a flower that protect the flower bud
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Flower ClassificationComplete flower Has all four male and female
partsIncomplete flower Missing one of the four male or
female parts
Perfect flower Has stamens and pistils
Imperfect flower Lacking either stamens or pistils
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Flower FunctionSexual Reproduction is the flowers sole function
Pollination by:
Wind
Insects and Birds
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Parts of the Seed
EndospermTissue that provides nutrition for the developing seed
CotyledonFood storage tissue
EmbryoGrowing part of seed
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Parts of the Seed
SeedcoatProtective outer covering of the seed
ScutellumAbsorbs the endosperm