9.4 Reproduction in plants
IB Syllabus Statements
Understandings:
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Flowering involves a change in gene expression in the shoot apex.
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The switch to flowering is a response to the length of light and dark periods in many plants.
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Success in plant reproduction depends on pollination, fertilization and seed dispersal.
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Most flowering plants use mutualistic relationships with pollinators in sexual reproduction.
Applications and skills:
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Application: Methods used to induce short-day plants to flower out of season.
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Skill: Drawing internal structure of seeds.
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Skill: Drawing of half-views of animal-pollinated flowers.
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Skill: Design of experiments to test hypotheses about factors affecting germination.
Video
Photoperiodism
Reproduction in Plants
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Topic 9.4 Reproduction of plants HookED SOLO Hexagons
Topic 9.4 Reproduction in plants SSaQ (Syllabus Statement as Questions)
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How do plants determine when flowering will begin as the shoot develops?
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Explain how plants use the length of light and dark periods to induce flowering.
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Explain the relationship between the following terms: pollination, fertilization, and seed dispersal
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Outline the mutualistic relationship between flowering plants and pollinators.
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Explain how one would go about inducing short-day plants to flower out of season.
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Draw the internal structure of a seed.
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Draw a diagram of an animal-pollinated flower.
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Outline an experiment that you could set up to investigate a factor that affects germination.
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Explain why focus in the past few decades has shifted from preserving individual species to preserving ecosystems.