Q:Fact 1: Plants exhibit phototropism, or growing toward a light source. Fact 2: Light comes from the sun. Given the two facts above, answer the question "What is plant's tendency to grow toward the sun called?" with the following options: - photomorphism - phototropism - photosynthesis - peachleaf willow - Conifers - Exfoliation - vegetation - photochromic
A:
phototropism