Plant transport- SAQs.docx

**[Questions]** 1. Name two substances plants need to be able to transport. Water, minerals. 2. By what process does water enter the root hair cells by? Osmosis 3. Name two adaptations of root hairs for osmosis. Thin walls, large surface area. 4. Name the two scientists responsible for th...

**[Questions]** 1. Name two substances plants need to be able to transport. Water, minerals. 2. By what process does water enter the root hair cells by? Osmosis 3. Name two adaptations of root hairs for osmosis. Thin walls, large surface area. 4. Name the two scientists responsible for the cohesion-tension model. Dixon and Joly. 5. What is transpiration? Transpiration is the loss of water vapour from the aerial parts of a plant 6. What is cohesion? Similar molecules sticking together. 7. What is adhesion? Different molecules sticking together 8. What structures control the opening and closing of stomata? Guard cells 9. Name two scenarios when the stomata would be closed. In high CO2 concentrations. In drought. 10. Name a scenarios when the stomata would be open. In low CO2 concentrations. 11. By what process does CO2 enter the stomata? Diffusion  12. Give an example of a root modified to store food. Carrot 13. Give an example of a stem modified to store food. A potato 14. Give an example of a leaf modified to store food. Onion