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Define chemotropism, phototropism, geotropism, hydrotropism

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Define chemotropism, phototropism, geotropism, hydrotropism

    • Posted by Surya Shukla 8 years, 2 months ago

    CBSE > Class 10 > Science
    • 1 answers

    Amar Kumar 8 years, 2 months ago

    Phototropism: It is the direction of growth of a plant in response to the direction of the light. Eg - Movement of shoot of plant upwards towards light.

    Geotropism:The movement of a plant in response to gravity is called geotropism. Eg - Root growing downward.

    Hydrotropism:The movement of a plant (or other organism) either towards or away from water is called hydrotropism. An example is that of plant roots growing in humid air bending toward a higher relative humidity level.

    Chemotropism:The movement of plant towards or away from chemicals is called chemotropism. Eg - Growth of pollen tubes towards ovules.

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