Plant unit roots stems and leaves
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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 to leaves Phloem – Transport nutrients and products of Photosynthesis throughout the plant. . Xylem.

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Plant Unit: Roots, Stems, and Leaves

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Plant unit roots stems and leaves

Plant Unit: Roots, Stems, and Leaves


What are xylem and phloem

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.


Xylem

Xylem

  • Move water and other minerals from roots to all other parts of plant.


Phloem

Phloem

  • Moves the products of photosynthesis (sugar) from the leaf throughout the plant.


Roots taproots and fibrous

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.


Taproots

Taproots

  • Described as central fleshy root

  • Taproot = main root of a plant.


Fibrous root

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.


Root tissues

Root Tissues

  • Roots are made of different tissues.

  • Epidermis

  • Cortex

  • Vascular Tissues


Cross sections of roots

Cross Sections Of Roots

Ranunculus root @ 40 X

Ranunculus root @ 100 X


Stems

Stems:

  • Hold Leaves up in Sunlight

  • Transport water and minerals between Leaves and Roots

  • Stem Parts:

    • Epidermis

    • Cortex

    • Vascular Tissue


Stems woody

Stems: Woody

  • Three major zones.

  • Xylem

  • Bark

  • Vascular Cambium


Cross sections of stems

Cross Sections of Stems

  • Alfalfa stem @ 100 X Corn stem @ 100 X


Leaves tissues

Leaves: Tissues

1. Cuticle

2. Epidermis

  • Both Sides (Upper/Lower)

  • Stomata

  • Guard Cells

    2. Palisade Layer

    3. Spongy Mesophyll

    4. Vascular Bundles


Plant diagram

Plant Diagram


Flower parts

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.


Stamen

Stamen

  • Consists of:

  • Anther=where the pollen is made and stored.

  • Pollen=contains sperm cells.

  • Filament=supports the anther


Pistil

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!


Flowers diagram

Flowers Diagram


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