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Symmetry and a symmetry in the angiosperms

Symmetry and a symmetry in the angiosperms. Angiosperm : from Greek αγγειον + σπερμα ( protected seed ) . Characteristics. vascular plants having seeds producing flowers and fruits. H ow many species exist ??. 720. 250 000 !!. 20 000. Angiosperms. MONOCOTS

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Symmetry and a symmetry in the angiosperms

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  1. Symmetry and asymmetry in the angiosperms

  2. Angiosperm : fromGreekαγγειον+ σπερμα(protectedseed) Characteristics • vascularplants • havingseedsproducingflowers and fruits

  3. Howmanyspeciesexist?? 720 250000 !! 20 000

  4. Angiosperms • MONOCOTS • mostlyherbaceous • DICOTS • herbaceous • arboreal

  5. Numberofshapeof the dispositionofribsof the structureof cotsrootsconductivevesselsleaves the flowers monocots dicots

  6. Monocots or Dicots ?? M D M D M

  7. M D M D D

  8. Macroscopic zygomorphic = bilateral Dicots Monocots

  9. Actinomorphic = radial Monocots Dicots

  10. Monocots or Dicots? M Z M Zygomorphic or Actinomorphic? Z

  11. A Monocots or Dicots? D D Zygomorphic or Actinomorphic? A

  12. Monocots or Dicots? A M A D Zygomorphic or Actinomorphic?

  13. SYMMETRICAL ?? Monocots Dicots

  14. Pollens • Microscopic Helianthusannuus Sunflower Oenothera fruticosa Eveningprimrose Sidalcea Malviflora Mallow Lilium auratum Lily Ipomoea purpurea Purplemorningglory Ricinuscommunis Castor beanplant

  15. Whatisit ?? Pollengrainoffigwort (Ranunculusficaria) 

  16. OvaryofCapsella

  17. Conclusion When the flowerisstar-shapeditisactinomorph, i.e., ithas a radialsymmetry On the contrary, when the flowerisbutterfly-shapeditiszigomorph, i.e., ithas a bilateralsymmetry

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