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Sarah Lomanto AgEd 410 Cal Poly-SLO

Plant Anatomy. Sarah Lomanto AgEd 410 Cal Poly-SLO. Parts of a Plant. Roots Leaves Stems Fruit Flowers. Diagram of Plant Parts. Root Systems. Two Basic Types of Root Systems. Fibrous- The roots branch from the bottom of the plant (corn and beans).

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Sarah Lomanto AgEd 410 Cal Poly-SLO

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  1. Plant Anatomy Sarah Lomanto AgEd 410 Cal Poly-SLO

  2. Parts of a Plant • Roots • Leaves • Stems • Fruit • Flowers

  3. Diagram of Plant Parts

  4. Root Systems • Two Basic Types of Root Systems • Fibrous- The roots branch from the bottom of the plant (corn and beans) • Taproot- A long tapering root (carrots and dandelions)

  5. Parts of Root Systems • Root Hairs- involved in absorption of nutrients from the soil • Root Cap & Meristem- conducting tissue, involved in conducting moisture & nutrients to the plant

  6. Types of Leaves • Simple leaves • Compound leaves • Needle leaves

  7. Leaves • Food manufacturing factory of the plant which performs Photosynthesis and contains the green pigment, Chlorophyll

  8. Leaves Also... • Capture solar energy, which is converted into chemical energy in the form of sugars and starch and is transferred up the food chain

  9. Parts of Leaves • Stomata- small openings in the leaf that help cool the plant through Transpiration • Blade- main body of the plant • Petiole- small stem which attaches the blade to the main plant stem

  10. More Parts of Leaves • Midrib- large central vein down the middle of the leaf • Apex- tip of the leaf • Base- bottom of the leaf & attaches to the petiole • Margin- edge of the leaf

  11. Different Types of Leaves • Can you identify the parts we discussed on these different types of leaves?

  12. Stems • Central support structure of the plant • Contain buds which are found in the area referred to as the node

  13. External Anatomy of Stems • Internodes- Areas between the buds • Bark Lenticels • Leaf Scars • Scale Scars

  14. Internal Anatomy of Stems • Xylem • Phloem • Cambium • Sapwood • Heartwood • Pith

  15. Stem Anatomy of Herbacious Plants • Epidermis • Cortex • Pith • Vascular Bundles

  16. Fruit • Ripened ovule or egg • In most plants the ovule or egg is fertilized by the sperm (the pollen) and the ovary matures into the fruit • Fruit are usually classified by their structure and number of ovules

  17. Simple Fruits • Develop from a simple ovary • Can be fleshy or dry

  18. Fleshy Simple Fruit • Classified as a “Drupe” or “Pome” • A drupe has a stone in the center of the fruit which is the seed • A pome has several seeds, usually in a chamber

  19. Dry Simple Fruit • Classified in two categories • Indehiscent • Dehiscent

  20. More Fruit Classifications • Aggregate fruits are developed from a single flower with many ovaries • Multiple fruit have flowers that are separated but closely clustered

  21. Flowers • Four main parts • Sepals • Petals • Stamens • Pistils

  22. Flower Classification • Complete- has all four main parts • Incomplete- missing any of the four primary parts • Perfect- has both a pistil and a stamen (the female and male reproductive structures) • Imperfect- missing the stamen or pistil

  23. The Pistil • Female reproductive structure and has three primary parts • Stigma- pollen collecting structure, located at the top of the pistil • Style- support structure below the stigma • Ovary- enlarged portion which contains ovules or eggs

  24. The Stamen • Male reproductive structure usually surrounding the pistil • Anther- pollen bearing structure • Filament- acts as a stalk to support the anther

  25. The End

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