Tracheophyta

Description

A-Levels Biology a2/2 (KINGDOM PLANTAE) Mind Map on Tracheophyta, created by ZC_ on 11/05/2013.
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Mind Map by ZC_, updated more than 1 year ago
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Created by ZC_ over 11 years ago
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Resource summary

Tracheophyta
  1. Vascular plants
    1. posses vascular tissue and grow to be large
    2. Pteridophyta
      1. FERNS
      2. Structure of a fern
        1. Dominent phase: sporophyte
          1. Diploid plant
            1. developed from a zygote
              1. mature plant has true roots, a stem and leaves
                1. underground stem - rhizome
                  1. leaflets - pinnae
                    1. leaves covered by cuticle and possesses stomata
                      1. sporangia develop on the underside of leaves
                        1. each cluster - sorus
                          1. protected by umbrella shaped cover - indusium
              2. gametophyte develops from a spore
                1. separate plant called a protallus
                  1. heart shaped structure
                    1. bears the gametangia
                      1. antheridium and the archegonium
                        1. anchored by rhizoids
                  2. production of gametes and fertilization
                    1. archegonia and antheridia produce eggs and sperm by mitosis
                      1. sperm released and swim in water into archegonia where fertilization of egg takes place
                    2. life cycle of a fern
                      1. meiosis and production of spores
                        1. spores are produced in sporangia by meoisis
                          1. spores released when annulus layer dries out and breaks open
                            1. dispersed by the wind
                              1. spore producing capacity enormous
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