Tropic movements in plants refer to directional growth in response to stimuli such as light or gravity. Shoots can exhibit positive phototropism (bending towards light), while roots show negative phototropism (bending away from light). Geotropism is the response to gravity, with roots growing downwards and shoots growing upwards.
What are tropic movements in plants, and how do they respond to environmental stimuli?
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Tropic movements in plants refer to directional growth responses to external stimuli. These movements are classified based on the direction of the stimulus. Positive tropisms involve growth towards the stimulus, while negative tropisms involve growth away from it. Common examples include phototropism (response to light), geotropism or gravitropism (response to gravity), and thigmotropism (response to touch). In phototropism, plant stems grow towards light for optimal photosynthesis, while roots exhibit positive geotropism, growing towards gravity for anchorage. Thigmotropism enables plants to respond to physical contact. These tropic movements allow plants to adapt and optimize their growth in response to environmental cues.