The Plant Kingdom

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The Plant Kingdom
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What are the FIVE Kingdoms of Life?
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The Tree of Life
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What is a Plant ??
In a few words describe what you think defines a
PLANT.
What makes plants different from other organisms?
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What is a plant?

• multicellular
• terrestrial
• nonmobile
• photosynthetic
• autotrophic

Impatiens noli-tangere Jewelweed
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Evolution of Major Plant Groups
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Major Groups of Plants

• Mosses
• Ferns and Allies
• Gymnosperms
• Angiosperms
• Monocots
• Dicots

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The earliest plants grew in areas like the
coastal mud flats of the Devonian (410 million
years ago)
Devonian Landscape
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Aglaophyton

• The earliest plants had
• stems
• rhizoids
• reproductive structures sporangia

Rhynia
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• The Carboniferous, 359 mya forests of ferns,
  clubmosses that grew to the size of trees,
  horsetails and gymnosperms. In the animal world,
  this period witnessed the spread of ancient
  amphibians and the evolution of the first
  reptiles.

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All plants have these four organs

• Roots
• Stems
• Leaves
• Reproductive Structures

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Roots
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Stems
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Which groups of plants do you see growing in
this photo?
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Leaves come in many shapes and forms
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Flowers
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Many trees are flowering plants
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Maple flowers
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Grass flower
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Other reproductive structures
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• ALL flowering plants produce fruits

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Monocots and DicotsThe two major classes of
flowering plants

• Monocots

• Dicots