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Flower Structure and Plant Growth Comparison

Learn about plant structure and growth differences between dicotyledonous and monocotyledonous plants. Understand the roles of apical and lateral meristems, auxin in phototropism, and more. Practice labeling plant diagrams for a better understanding.

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Flower Structure and Plant Growth Comparison

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  1. PlantStructure and Growth Topic 9 AHL IB BIOLOGY

  2. STARTER: Labeltheparts of a flower

  3. LearningObjectives • Draw and labelplan diagrams to show the distribution of tissues in the stem and leaf of a dicotyledonous plant. • Outlinethree differences between the structures of dicotyledonous and monocotyledonous plants. • Comparegrowth due to apical and lateral meristems in dicotyledonous plants. • Explainthe role of auxin in phototropism as an example of the control of plant growth.

  4. GROUP THOUGHT: Can youlist 3 differencesbetweenmonocots and dicots?

  5. GROUP THOUGHT: Whydoesmowingthelawnnotkillthegrass? BONUS: Spot thegrammarmistake!

  6. Watchthis virtual experiment What do youseehappenning? Why do youthinkthisishappenning?

  7. What’shappenninghere?

  8. PastPaperQuestion (a) apical and lateral (b) 2 max StructureMonocotyledonousDicotyledonus leaf parallel veins branched (net of) veins; seed one cotyledon two cotyledons; flower floral parts in multiple of 3 floral parts in multiple of 4 or 5; stem scattered vascular bundles ring of vascular bundles around central pith; root adventitious roots branched tap roots; Award [1] for each correct line (c)auxinproduced at apical meristem / tip; transported to growing area / zone of cell growth; lateral transport to cells on shade side; results in cellexpansion; shoot “grows” towards light source; experimental detail; 3 max

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