Year 8 Science · Unit 1 · Lesson 7
Foundation Worksheet
Learning Goals
Match each term to its function
Draw a line connecting each term on the left to its correct function on the right. Or write the matching letter next to each term.
| Term | Your answer | Function |
|---|---|---|
| Xylem | A. Controls whether stomata are open or closed | |
| Phloem | B. Tiny pores on the leaf surface through which water vapour exits | |
| Stomata | C. Transports water and dissolved minerals from roots to leaves (upward only) | |
| Guard cells | D. Has large surface area in soil to absorb water and minerals | |
| Transpiration | E. Transports sugars (glucose/sucrose) from leaves to all parts of the plant | |
| Root hair cell | F. Loss of water vapour from a plant, mainly through leaf pores |
Fill the gap
Choose the correct word from the word bank to complete each sentence. Two words will not be used.
Water and dissolved salts are transported from the roots to the leaves through vessels. These vessels are made of dead, hollow cells stacked end-to-end and can only carry substances in one direction, upward.
The process of occurs when water evaporates from leaves through tiny pores called . This evaporation creates a that pulls the water column up through the plant.
Sugars produced by photosynthesis are transported around the plant by vessels, these can carry substances in both directions. The opening and closing of stomata is controlled by cells, which swell with water when the plant needs to let gases in or out.
1. A eucalyptus tree in western NSW wilts during a heatwave. Using the words transpiration and stomata, explain why the leaves wilt even though the roots are in moist soil.
2. State one way xylem vessels are different from phloem vessels. Your answer must mention the structure of the cells.
Wrap Up
In one sentence, what was the main idea of this lesson?