Plant Group Representatives

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Plant Group Representatives
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• I. Nonvascular plants
• A. Mosses
• B. Liverworts
• C. Hornworts
• II. Seedless Vascular plants
• A. Whisk ferns
• B. Club mosses
• C. Horsetails
• D. Ferns
• III. Gymnosperms
• A. Cycads
• B. Gnetophytes
• C. Gingkos
• D. Conifers
• IV. Angiosperms (Flowering Plants)
• A. Monocots

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Nonvascular Plants(Three Phyla)

• These plants have no transportative tissue that
  can carry food, minerals and water throughout the
  plant.
• They were among the first to make the transition
  to land.
• They require very moist environments to supply
  their water requirements.

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Moss
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Spanish Moss(not a true moss)
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A Different Moss for Sure

• A Randy Moss

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A Popular Moss
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Moss Sporophytes(white structures)Growing out
of Gametophytes
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Hornwort
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LIverwort
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Liverwort
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Liverwort
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Seedless Vascular Plants

• These plants developed transportative (vascular)
  tissue which allowed them to live in places with
  less moisture on the surface of the earth.
• This adaptation resulted in them being much
  larger also, since they could carry water to
  cells far from the water source.
• They reproduce by spores not seeds.

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Whisk Fern

• Whisk
• Fern

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Club Moss
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Horsetails
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Horsetail
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Horsetails
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Horsetails
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Fern
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Fern Fronds(sporophytes)
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Sori
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Seed Plants

• Seed Plants developed the ability to protect
  their sexually produced embryo in a hard shelled
  structure (the seed).
• The Seed
• helped protect them from desiccation
• helped disperse the species
• provided the opportunity for dormancy

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Gymnosperms

• The term gymnosperm literally means
  naked-seeded. It was chosen for them because
  their ovule lies exposed on a scale at the time
  of pollination.
• - There are four groups of living gymnosperms
  cycads, gingkos, gnetophytes, and conifers.

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Cycad
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Cycad
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Gnetum
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Gingko Tree
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Gingko Leaves
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Conifers(cone bearers)
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Bristle Cone Pine

• Oldest living
• organisms
• -Some 4700
• years old

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Plant Representatives

• Biology

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Angiosperms(Flowering Plants)

• Unlike gymnosperms, their ovules are enclosed
  within diploid tissues at the time of
  pollination.
• The flower serves as a lure for insects that
  transfer pollen from anther to stigma.
• There are 250,000 known species of this group
  which makes it the most diversified of all plant
  groups.

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