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Plant Tropism Experiments and Results in Light Conditions

Explore experiments and results on plant tropisms in different light conditions using figures and detailed descriptions. Discover how shaded and illuminated sides affect plant growth, including the effects of chemicals and gravity on root bending.

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Plant Tropism Experiments and Results in Light Conditions

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  1. Chapter 39 Plant Tropisms

  2. Figure 39.5 RESULTS Shaded side Control Light Illuminatedside Boysen-Jensen Light Darwin and Darwin Light Gelatin(permeable) Mica(impermeable) Trans-parentcap Opaquecap Opaqueshield overcurvature Tipremoved

  3. RESULTS Figure 39.6 Excised tip onagar cube Growth-promotingchemical diffusesinto agar cube Control(agar cubelackingchemical) Offsetcubes Control

  4. Primary root of maizebending gravitropically(LMs) (b) (a) Statoliths settling tothe lowest sides ofroot cap cells (LMs) Figure 39.24 Statoliths 20 m

  5. Figure 39.25

  6. Figure 39.26 (b) Stimulated state (a) Unstimulated state Side of pulvinuswith flaccid cells Leafletsafterstimulation Side of pulvinuswith turgid cells Vein Pulvinus(motororgan) 0.5 m (c) Cross section of a leaflet pair in the stimulated state (LM)

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