When a plant responds to external stimuli, such as light, gravity, or touch by directional growth, these responses are referred to as
A) turgor movements.
B) sleep movements.
C) nastic movements.
D) circadian rhythms.
E) tropisms.

Question

Quizplus · Accepted Answer

Tropisms are directional growth responses in plants towards or away from external stimuli such as light (phototropism), gravity (gravitropism), or touch (thigmotropism).

When a Plant Responds to External Stimuli, Such as Light