Dichotomous Key/Plantae

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Dichotomous Key: Plantae
Kingdom: Plantae

[edit] 1: Plants

• Cellular Organization
  • All cells similar or almost so, appears as amorphous mass - #2: Green Algae
  • Cells differentiated into types, connected in a discernible structure - #3: Embryophytes

[edit] 2: Green Algae

• Flagellate cells

[edit] 3: Embryophytes

• Vascular system
  • Plant tissue does not contain water-conducting vessels known as tracheids - Bryophyta
  • Plant tissue does contain water-conducting vessels known as tracheids - #4: Tracheophytes

[edit] 4: Tracheophytes

• Seeds
  • Present - #5: Spermatophytes
  • Not present - #6: Non-seed bearing tracheophytes

[edit] 5: Spermatophytes

• Ovule enclosed at pollination
  • Yes - Magnoliophyta
  • No - #7: Gymnosperm

[edit] 6: Non-seed bearing tracheophytes

• Roots
  • Present - #10
  • Not present: Psilotophyta

[edit] 7: Gymnosperm

• Leaf veins
  • Bifurcate only - Ginkgo biloba
  • Branching - #8

[edit] 8

• Wood vessels
  • Present - Gnetophyta
  • Not present - #9

[edit] 9

• Leaves
  • Individual leaves small (0.2-40 cm long), not subdivided into leaflets - Pinophyta
  • Individual leaves large (50-200 cm long), subdivided into many leaflets - Cycadophyta

[edit] 10

• Leaves
  • Fused at the base - Equisetophyta
  • Unfused - #11

[edit] 11

Could be Ophioglossophyta, Pteridophyta or Lycopodiophyta

Glossary for this page (all links are to Wikipedia articles)
Seed: Flower: Tracheid: Haploid: Diploid: Sporangium: