Plant growth involves synthesis of more protoplasm, cell division, cell enlargement and cell differentiation. It is, therefore, influenced by many factors like
- AGravity determines the direction of shoot growth only
- BTemperature should be 28-30°C for the proper growth of most plants
- CNutrients are required for the synthesis of protoplasm but not as a source of energy
- DLight is required for tissue differentiation but not for the synthesis of pigments
✓ Correct answer: B
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