How water is utilised by the plants when they take a litre water?

When plants take in water, it is absorbed through their roots and transported through their vascular system to various parts of the plant. Water is essential for plants to carry out important physiological processes such as photosynthesis, nutrient uptake, and transpiration.

When a plant takes in a litre of water, it will use this water for several purposes:

1. Photosynthesis: Water is a key component in the process of photosynthesis, where plants convert sunlight into energy. Water molecules are split during photosynthesis, releasing oxygen and hydrogen ions that are used to produce glucose.

2. Nutrient uptake: Water helps plants absorb essential nutrients from the soil through their roots. These nutrients are then transported throughout the plant to support growth and development.

3. Transpiration: Plants lose water through a process called transpiration, where water evaporates from the leaves and stems. This helps to cool the plant and maintain turgor pressure in the cells, allowing the plant to stand upright.

4. Support and structure: Water also provides structural support to plants, helping them maintain their shape and rigidity. Water-filled cells help to keep the plant upright and support its growth.

Overall, water is essential for the survival and growth of plants, and plays a crucial role in their overall health and functioning.

Water Utilization by Plants from a Liter of Water

1. Transpiration (90-95%):

- Evaporation of water from plant leaves
- Regulates temperature, provides water for photosynthesis, and transports nutrients

2. Photosynthesis (1-5%):

- Chemical process using sunlight, water, and carbon dioxide to create glucose (food)
- Water is used as a solvent and reactant

3. Growth and Expansion (2-3%):

- Cell elongation and tissue development
- Water provides turgor pressure, maintaining shape and rigidity

4. Nutrient Absorption (1%):

- Water dissolves minerals from the soil
- Dissolved nutrients are transported throughout the plant

5. Guttation (0.5%):

- Excess water excreted from leaf tips or margins
- Occurs when transpiration is low and water pressure is high

Breakdown of Utilization:

- Transpiration: 900-950 mL
- Photosynthesis: 10-50 mL
- Growth and Expansion: 20-30 mL
- Nutrient Absorption: 10 mL
- Guttation: 5 mL

Note:

- Water utilization rates can vary depending on environmental factors, plant species, and growth stage.
- Plants typically absorb more water than they use, with excess water lost through transpiration.
- Efficient water use strategies, such as stomatal closure during drought, help plants conserve water.