McqMate
| Q. |
Tropic movement is due to |
| A. | Bidirectional effect of environmental factors on plant parts |
| B. | Unidirectional effect of environmental factors on plant parts |
| C. | Multidirectional effect of environmental factors on plant parts |
| D. | No effect of environmental factors on plant parts |
| Answer» B. Unidirectional effect of environmental factors on plant parts | |
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