Question

A plant placed near a window bends outward because

• A. Its tip is able to obtain more light
• B. Its tip is able to receive necessary warmth
• C. The auxin content on the shaded side is higher than that on the lighter side
• D. Its tip can get more oxygen

Answer 1

The correct option is C The auxin content on the shaded side is higher than that on the lighter side

• The growth curvature response of plants towards light is known as phototropism which is mediated by auxins in plants.
• The bending of the plant is caused by more elongation of the shaded part as compared to the lighter side, caused by increased auxin concentration on the shaded side and decreased on the other side.

Thus, option C is correct.