Use reasoning to answer the following question. What is called when plants grow toward the sun or an artificial light?
Options:
- (A) Exfoliation
- (B) Brownian motion
- (C) heat energy
- (D) phototropism
- (E) photovoltaic
- (F) autumn
- (G) peachleaf willow
- (H) mitosis
Plants exhibit phototropism, or growing toward a light source. Many light sources such as the sun and most artificial lights produce unpolarized light. Plants exhibit phototropism, or growing toward the sun or artificial light.
So, the answer is (D).