Unit 5: The Evolutionary History of Diversity Extras  Study Guide

Chapter 30 Plant Diversity II: The Evolution of Seed Plants Review Notes Point
  1. Seed plants continued the evolution of smaller gametophytes in the alternation of generations.
     
     
     
     
  2. Gymnosperms bear "naked" seeds , typically on cones .
     
     
     
     
  3. The gymnosperm life cycle shows a dominant sporophyte generation, and the development of seeds from fertilized ovules .
     
     
     
     
  4. Angiosperms are seed plants that possess reproductive structures called flowers and fruits .
     
     
     
     
    • A flower is a specialized shoot with modified leaves and may produce fruits.
       
       
       
       
    • Fruits are adapted for seed dispersal to new locations.
     
     
     
     
  5. The angiosperm life cycle includes a double fertilization which produces a food-storing endosperm in addition to the embryo .
     
     
     
     
  6. Most angiosperms are monocots and eudicots , classified by the number of cotyledons (seed leaves).
     
     
     
     
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