How does phototropism occur in a plant stem ? Explain with the help of lebelled diagram ?
Page 263 Chapter - 14.Control and Co-Ordination in Organisms
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The movement in plants because of light is called phototropism. This movement can be either towards the light or away from it. A stem develops in the heading of the daylight (emphatically phototropic) and roots grow away from it (adversely phototropic). The development is constrained by plant hormone, auxin.
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