Across
- 3. : a compound containing nitrogen, important for healthy plant growth
- 4. : a type of sugar
- 5. hair cells : specialised cells in plant roots that are adapted for absorbing water and minerals from the soil
- 7. : a diagram that models the feeding relationships between groups of organisms
- 10. : a process of living organisms – a chemical reaction that takes place in all living cells that releases energy
- 14. : the amount of light received by a surface in a given time
- 15. : a tissue made of loosely arranged cells with air spaces between them to allow gases to diffuse
- 16. : the amount of water vapour in the air
- 19. : the part of the cell where respiration takes place, providing energy for the cell’s activities
- 20. : pores in the end walls of phloem cells that help to control movement of sugars in both directions
Down
- 1. solution : a chemical reagent that can be used to test for the presence of starch
- 2. specialised cells that surround the stomata in the leaves of plants and control their opening and closing
- 6. : the number of times a value or a group of values occurs
- 8. : absorbs sunlight for photosynthesis, the process by which green plants use light to make food
- 9. : a strong, waterproof polymer that reinforces xylem cell walls
- 11. : leaf tissue where photosynthesis occurs
- 12. : an element needed for producing chlorophyll, which plants use for photosynthesis
- 13. : an organism that makes its own food
- 17. : anchor the plant in the soil and absorb water and minerals
- 18. : a pure substance with a crystal structure, made of either an element or a compound; plants use minerals as nutrients from the soil for survival and growth
- 21. epidermis : a layer of cells on the underside of the leaf that contains stomata for gases to diffuse in and out of the leaf