Question
What is the difference between tropic and tactic movements?
Answer
The three brief points on the difference between tropic and tactic movements:
- Tropic movements are directional responses to external stimuli, whereas tactic movements are responses directed towards or away from a stimulus.
- Tropic movements are dependent on the direction of the stimulus, while tactic movements are dependent on the intensity or presence of a stimulus.
- Tropic movements are primarily observed in plants, while tactic movements are observed in a wide range of organisms, including bacteria, protozoa, and animals.