What is the difference between tropic and nastic movements?
Answer
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TROPIC MOVEMENTS |
NASTIC MOVEMENTS |
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1. Movement is due to stimulus and response is towards or away from the direction of the stimulus. |
1. Movement is due to stimulus by the response is not towards or away from the stimulus. |
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2. The movement is more or less permanent. |
2. The movement is temporary and reversible. |
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3. Usually observed in stem and roots |
3. Usually observed in other parts like leaves, flowers etc. |
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4. It is a result of unequal growth on either side of the stem or roots showing the movement |
4.It is a result of change in the cell volume |
