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What is Meant by 'Positive Geotropism' and 'Negative Geotropism? Give One Example of Each Type. Draw a Labelled Diagram to Illustrate Your Answer Indicating the Plant Part Which Shows Positive Geotropism and the Plant Part Which Shows Negative Geotropism. - Science

What is meant by 'positive geotropism' and 'negative geotropism? Give one example of each type. Draw a labelled diagram to illustrate your answer indicating the plant part which shows positive geotropism and the plant part which shows negative geotropism.

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Solution

 If the movement of the plant parts is towards the pull of gravity, it is known as positive geotropism; whereas if the movement of the plant parts is in the direction opposite to the pull of gravity, it is known as negative geotropism.
The movement of roots towards the soil is an example of positive geotropism, whereas the movement of plant stem away from the soil in the upward direction is an example of negative geotropism.

 

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Lakhmir Singh Class 10 Biology (Science)
Chapter 2 Control and Coordination
Q 35.2 | Page 94
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