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PLANT DIVERSITY

PLANT DIVERSITY. SUPERGROUP ARCHAEPLASTIDA – KINGDOM PLANTS. SPORE. GAMETOPHYTE. GAMETOPHYTE SHEDDING SPORE COAT. MATURE GAMETOPHYTE (HERMAPHRODITIC). Rhizoids. Antheridia (male). Archegonia (female). EGG IN ARCHEGONIUM. FLAGELLATED SPERM COMING OUT OF ANTHERIDIUM.

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PLANT DIVERSITY

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  1. PLANT DIVERSITY

  2. SUPERGROUP ARCHAEPLASTIDA – KINGDOM PLANTS

  3. SPORE

  4. GAMETOPHYTE

  5. GAMETOPHYTE SHEDDING SPORE COAT

  6. MATURE GAMETOPHYTE (HERMAPHRODITIC) Rhizoids Antheridia (male) Archegonia (female)

  7. EGG IN ARCHEGONIUM

  8. FLAGELLATED SPERM COMING OUT OF ANTHERIDIUM

  9. Colonization of Land – Adaptive Radiation • Limitations for terrestrial life • Water availability • Dispersal mechanisms • Maintaining genetic diversity • Result = great diversity of land plants

  10. Vascular Tissue • Long tubes: transport water minerals and nutrients. • Phloem: sugars/nutrients from leaves • Xylem: wter and minerals from roots • Made of special cells called tracheid cells • Tracheophytes

  11. Alternation of generations Haploid generation (1n) • Gametophyte • Haploid gametes fuse to form diploid zygote • Diploid generation (2n) • Sporophyte • Produce haploid spores through meiosis

  12. Moss and Liverwort Life Cycle • Gametophyte is dominant form • Lack of vascular tissue • Low to the ground • Swimming sperm (dependent on water)

  13. Fern Life Cycle • Sporophyte is dominant form • Vascular tissue present • Can grow taller • Swimming sperm (dependent on water)

  14. Pine Life Cycle • Sporophyte is dominant form • Vascular tissue present • Dispersal ability • Sperm in pollen • Seeds

  15. Angiosperm Life Cycle • Sporophyte is dominant form • Vascular tissue present • Flowers • Pollination (dispersal and genetic variability) • Double fertilization

  16. TODAY’S LAB Fill out Table 5.2 with plant characteristics – study for quiz Lab Report due next week: fern lifecycle Plant presentations

  17. Orchids

  18. Horse Tails

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