water and mineral transport in plants.pptx

Biology year 9

1. MOVING WATER THROUGH PLANTS Water moves through plants from the roots to the leaves in the transpiration stream. The roots in plants will absorb the water from the soil. The specialized root hair cells on the outside of their roots will absorb the water. Minerals such as nitrates are also absorbed into plant roots and transported by dissolve in water.

2. Transporting water and minerals around the plant Xylem is a specialized plant tissue Xylem tubes run up through the stems of the plant from the roots to the leaves.

3. Leaving the plant Stoma (singular) Stomata (plural) Stomata are controlled by the guard cells.

4. Leaving the plant

5. Transpiration Transpiration is the process of the loss of water from the leaf to the surroundings.

6. In high temperature and windy weather, the transpirations is higher compare to calm and cool day. More water will evaporates from the leaves. More water is pulled up through the plant.

7. The colour of leaves are depends on the colour of the water. Water is transported by diffusion process through the xylem tubes .

8. Key points for today lesson? Water absorbs by plant through the root hairs by diffusion process. Xylem is function to transport water around the plant. Stomata is a specialized cells underside of the leaf that control the gaseous exchange and evaporate the water. Transpiration is the process of evaporation of water from the leaves.