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WHY DO PLANED NEED WATER? |
| Plants need water for many reasons: 1. Water is a solvent for biochemical reactions. 2. Water is required or produced by many biochemical reactions. For example it is a reactant in photosynthesis which plants need to make food 6CO2 + 6H20 --> C6H12O6 +6O2 3. Water flow helps transport mineral nutrients through the plant. 4. Water filled cells help support the plant, therefore plants deprived of water wilt. 5. About 95% of water absorbed by most plants is evaporated from the leaves (termed transpiration) because the stomata must be open to let in carbon dioxide needed for photosynthesis. |
