Explain it by bullet. Division Cycadophyta: Cycads Internally, cycad stems are similar to those of seed ferns—a thick cortex containing secretory ducts surrounds a small amount of manoxylic (parenchymatous) wood. Unlike seed ferns, cycad foliage leaves do not bear ovules. Cycads produce seed cones and pollen cones, each on separate plants.

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Division Cycadophyta: Cycads

  • Internally, cycad stems are similar to those of seed ferns—a thick cortex containing secretory ducts surrounds a small amount of manoxylic (parenchymatous) wood.
  • Unlike seed ferns, cycad foliage leaves do not bear ovules.
  • Cycads produce seed cones and pollen cones, each on separate plants.
  • Seed cones are variable, with those of Cycas revoluta usually considered the most relictual.
  • Although Cycadophyta was a much larger group with many more species in earlier times,currently, it contains 9 or 10 genera and approximately 100 species.• They are almost all tropical with an unusual distribution; some occur in Cuba and Mexico, others in Australia, still others in southeast Asia or Africa
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