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Leaf Structure - PowerPoint PPT Presentation


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Leaf Structure. 1. Whorled. Leaves grow all the way around the stem. 2. Petiole. The small stem that attaches a leaf to the main stem. 3. Blade. The large, flat part of the leaf. 4. Midrib. Large center vein from which all other veins extend. 5. Veins.

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PowerPoint Slideshow about 'Leaf Structure' - ronny


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Presentation Transcript
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1. Whorled

Leaves grow all the way around the stem.

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2. Petiole

The small stem that attaches a leaf to the main stem.

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3. Blade

The large, flat part of the leaf.

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4. Midrib

Large center vein from which all other veins extend.

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5. Veins

Form the structural framework of the leaf.

Transport water and nutrients.

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6. Margin

Edge of the leaf.

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7. Epidermis

The skin of the leaf. A single layer of cells.

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8. Guard Cells

Cells that open and close the stomata in the leaf.

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9. Stoma

Small pores on the underside of the leaf.

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10. Transpire

Give off moisture.

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11. Chloroplast

Food (glucose) making cells of the leaf.

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12. Photosynthesis

Process where carbon dioxide and water, with light, are converted to sugar (glucose) and oxygen.

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13. Oxidation

When something combines with oxygen.

Examples: Burning, rusting, rotting

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14. Respiration

The use of oxygen to burn glucose for energy.

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Leaf Anatomy

Tip

1

Margin

2

Midrib

7

3

Vein

4

Spine

Petiole

6

5

Base

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What do the chloroplasts do?

  • Absorb sunlight
  • Make glucose
  • Simple sugar
  • C6 H12 O6
  • What is this process called?
  • Photosynthesis
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Stoma

  • What do they do?
  • like pores
  • let CO2 in, O2 out

Stomata = plural

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Use terms in a sentence

Example:

A plant with a whorled leaf arrangement has leaves growing all the way around the stem.