Plants

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Plants

• Plant Evolution
• Cyanobacteria or blue-green algae
• Green AlgaeChlorophyta
• Bryophytes
• Ferns
• Gymnosperms
• Angiosperms

• Tracheophytes

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Bryophytes

• Mosses and liverworts
• Nonvascular
• Must be near water for sexual reproduction
• Undergo alternation of generations.
• The haploid gametophyte is the major form.

• A diploid sporophyte manufactures haploid spores
  via meiosis.

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Ferns

• 1st vascular plants
• Have both xylem and phloem
• Fronds
• Can grow very large.
• Must have water for sexual reproduction.
• Diploid sporophyte is the main form.

• A haploid gametophyte also exists.
• Alternation of generations
• Produce no seeds, flowers, or fruits

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Gymnosperms

• Vascular
• Produce seeds
• Do not produce flowers or fruits.
• Have pollen.
• What are the advantages of pollen.

• Include most evergreens.
• Monoecious
• Diecious
• Diploid sporophyte is the major form.
• A haploid gametophyte also exists.

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Angiosperms

• Flowering plants.
• Have a vascular system
• Have flowers, fruits, seeds, and pollen.
• What are the advantages of flowers and fruits?
• Most plants are angiosperms.

• Angiosperms are divided into two groups
  Monocots and dicots.
• Diploid sporophyte is the major form.
• These form microspores which form the haploid
  gametophytes which produce the gametes.

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