Kingdom Viridiplantae
   Gymnosperms
        Coniferophyta (Conifers)

  • Heterosporous seed plants
  • Sperm not motile; conducted to egg by a pollen tube
  • Leaves mostly needle-like or scale-like
  • Trees, shrubs
  • About 50 genera
  • Many produce seeds in cones

Pine Pollinate (Staminate) Cone

Picture
Pollen sac
Pollen

Pine Leaf - 100X (Needle)

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Resin Canals
Epidermis
Stomata
Mesophyll
Xylem
Phloem

Pine Pollen Grain - 1000X

Picture
Pollen Grain
Air bladder

Pine Pollen Tube

Picture
Sperm

Pine Ovulate Cone

Picture
Archegonia
Egg
Female gametophyte

Pine Seed

Picture
Embryo
Gametophyte
Seed Coat