AP BIOLOGY

Detailed explanation-1: -The process of growing plants toward a light source is known as positive phototropism. Positive phototropism is found in the shoot system, which includes the leaves, flowers, stems, lateral buds, and other elements that extend above the ground.

Detailed explanation-2: -Sunflowers are a great example of positive phototropism, because not only do their stems curve toward the light but their flowers turn to face the sunlight as well.

Detailed explanation-3: -Specifically, stems exhibit positive phototropism, or curvature toward the light, while roots show negative phototropism, or curvature away from the light.

Detailed explanation-4: -One important light response in plants is phototropism, which involves growth toward-or away from-a light source. Positive phototropism is growth towards a light source; negative phototropism is growth away from light.

Detailed explanation-5: -Stems are positively phototropic. Roots are negatively phototropic.