9.4  Reproduction in Plants

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Essential Idea:

Reproduction in flowering plants is influenced

by the biotic and abiotic environment


  • Flowering involves a change in gene expression in the shoot apex
  • The switch to flowering is a response to the length of light and dark periods in many plants
  • Success in plant reproduction depends on pollination, fertilization and seed dispersal
  • Most flowering plants use mutualistic relationships with pollinators in sexual reproduction


  • Methods used to induce short-day plants to flower out of season


  • Drawing internal structure of seeds
  • Drawing of half-views of animal-pollinated flowers
  • Design of experiments to test hypotheses about factors affecting germination