Study the diagram given below and answer the questions that follow:

(a) Name the phenomenon depicted by the shoot in the above diagram.

(b) Which plant hormone plays an important role in the above movement?

(c) Name one stimulus which gives a positive response for the roots but negative response for the shoot.

(a) Phototropism is the phenomenon depicted by the shoot in the given diagram.

(b) Auxin is the plant hormone that plays an important role in phototrophic movement.

(c) Gravity.