1. Plants and water

2. Plants and water SLOs Describe the process of transpiration Describe the process of transpiration Explain the function of xylem and phloem tubes in plants Explain the function of xylem and phloem tubes in plants Describe the process of diffusion and osmosis Describe the process of diffusion and osmosis

3. Photosynthesis Review 1. “Photo” means: 2. “synthesis” means: 3. Photosynthesis is a process where: 4. The equation for photosynthesis is: 5. All __________ things undergo respiration, which is the same/opposite (circle one) to photosynthesis Light To make/put together Plants make food using the energy from sunlight Carbon dioxide + water  food (glucose) + energy Sunlight Living

4. Transport in plants Plants use water to carry substances from one part to another. Plants do not have blood or hearts to pump it!

5. The vascular system of plants There are two types of tubes in plants: There are two types of tubes in plants: Xylem: tubes that carries water (and minerals) upwards Xylem: tubes that carries water (and minerals) upwards Phloem: tubes that carries food (glucose) up AND down the plant Phloem: tubes that carries food (glucose) up AND down the plant

6. Transpiration Water comes in through the roots and moves up through the xylem. Water is lost by evaporation in the leaves (like a straw)

7. Read P81 in NMS1 and complete questions 4-5 (draw a nice BIG diagram + labels showing the movement of water in trees/plants)

8. Osmosis causes transpiration Water escapes the leaves by evaporation Water moves up the stem to replace the water lost in the leaves it is drawn up by the transpiration stream Water moves into the root cells by osmosis because there is more water in the soil than in the root cells Osmosis powers the movement of water in plants – as water escapes the leaves it is replaced by water moving up the stem from the roots