Which of the following instruments are used to study geotropism?

electrical means and ion assimilation

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electro-chemical means and changing turgor pressure

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chemical means and ion distribution

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Both A & B

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Solution

The correct option is B
electro-chemical means and changing turgor pressure

Geotropism is demonstrated in lab using an instrument called clinostat. Clinostat rotates to neutralise the effect of gravitational pull on the plant growth and development. Rheostat, galvanometer and potentiometer are instruments dealing with electric current, resistance and potential difference.

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