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Plant Unit: Roots, Stems, and Leaves. What are Xylem and Phloem? ► Transport System ► Similar to our veins and arteries ► Xylem – moves water from roots.

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Presentation on theme: "Plant Unit: Roots, Stems, and Leaves. What are Xylem and Phloem? ► Transport System ► Similar to our veins and arteries ► Xylem – moves water from roots."— Presentation transcript:

1 Plant Unit: Roots, Stems, and Leaves

2 What are Xylem and Phloem? ► Transport System ► Similar to our veins and arteries ► Xylem – moves water from roots to leaves ► Phloem – Transport nutrients and products of Photosynthesis throughout the plant.

3 Xylem ► Move water and other minerals from roots to all other parts of plant.

4 Phloem ► Moves the products of photosynthesis (sugar) from the leaf throughout the plant.

5 Roots: Taproots and Fibrous ► Designed to anchor plant to ground. ► Absorbs water, oxygen, and other dissolved minerals from soil. ► Stores some of the materials produced by the plant.

6 Taproots ► Described as central fleshy root ► Taproot = main root of a plant.

7 Fibrous Root ► Many fibrous roots are present at the same time. All branching from main plant. ► Grasses are an example of a fibrous root system.

8 Root Tissues ► Roots are made of different tissues. ► Epidermis ► Cortex ► Vascular Tissues

9 Cross Sections Of Roots Ranunculus 40 X Ranunculus 100 X

10 Stems: ► Hold Leaves up in Sunlight ► Transport water and minerals between Leaves and Roots ► Stem Parts:  Epidermis  Cortex  Vascular Tissue

11 Stems: Woody ► Three major zones. ► Xylem ► Bark ► Vascular Cambium

12 Cross Sections of Stems ► Alfalfa 100 X Corn 100 X

13 Leaves: Tissues 1. Cuticle 2. Epidermis - Both Sides (Upper/Lower) - Stomata - Guard Cells 2. Palisade Layer 3. Spongy Mesophyll 4. Vascular Bundles

14 Plant Diagram

15 Flower Parts ► Reproduction (sexual) takes place in the flower. ► Stamen=male reproductive system ► Pistil=female reproductive system ► Petals=color to attract pollinators ► Sepals=outer part of flower; provides protection to the ovary/ovule.

16 Stamen ► Consists of:  Anther=where the pollen is made and stored.  Pollen=contains sperm cells.  Filament=supports the anther

17 Pistil ► Consists of:  Stigma=sticky surface for pollen to land on  Style=connects stigma to ovary  Ovary=contains ovules with egg—becomes the fruit we eat!  Ovule=contains ONE egg—will become the seed!

18 Flowers Diagram


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