Question

The movement of plant organs in the direction of light is known as:

• A. Geotropism
• B. Hydrotropism
• C. Thigmotropism
• D. Phototropism

Answer 1

The correct option is D Phototropism

The growth movement of plant parts in the direction of light is called phototropism. Some aerial parts of the plant like the stem, move towards the source of light. These organs are called positively phototropic. Some other organs e.g. roots move away from light and they are called negatively phototropic.

So, the correct answer is option D.