Geotropic response is perceived by

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(C) The geotropic stimulus (gravity) is perceived by the root cap in the case of roots and by the stem apex in the case of stems. The root cap contain

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Root cap

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(C) The geotropic stimulus (gravity) is perceived by the root cap in the case of roots and by the stem apex in the case of stems. The root cap contains specialized cells called statocytes,which contain starch-filled amyloplasts known as statoliths. These statoliths settle at the bottom of the cells due to gravity,signaling the direction of the gravitational pull to the plant.

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