The stem of a plant is growing upward while the roots downward. Which of these stimuli correctly describes the response of the plant?

Question

Gravity

Temperature

Touch

Light

Answer 1

The correct stimulus that describes the response of the plant's stem growing upward and roots growing downward is gravity. This phenomenon is known as gravitropism (or geotropism), where the plant's roots exhibit positive gravitropism (growing toward gravity) and the stem exhibits negative gravitropism (growing away from gravity).