Response to stimuli within
a stimulus that affects the behavioral response of the plant hormone is a hormone which regulates the growth of plants. Horseradish is a hormone auxin (Auxin) Auxin is produced by cells in the roots and stems of plants. This will stimulate the growth of plants, but most will inhibit the growth of roots
auxin. Will be stimulated by external stimuli is light and gravitation two cases:
the response of plants to light. (Phototropism) when the plant gets the light intensity is not equal on all sides. The plant will bend or tilt the balance towards a greater concentration of light is always
the response of plants to the force of gravity (Geotropism) plant roots will grow in the same direction as the force of gravity. The trunk will grow in the direction opposite to the force of gravity.