Across
- 1. a sugar that is used by cells as an energy source
- 4. a green pigment in chloroplasts that traps light energy for photosynthesis
- 6. the tendency of water molecules to stick to certain surfaces
- 7. combination of carious types of tissue that work together to perform a certain function
- 8. evaporation of water from leaves
- 10. a plant growth hormone produced in plant tips
- 11. a cluster of similar cells that share the same structure and function
- 13. a waxy substance coating the epidermis of plants, which prevents the evaporation of water
- 15. a protective outer layer of cells covering the leaves, roots and stem
- 17. plant response to stimulus
- 18. plant vascular tissue that carries water and minerals from the roots to the leaves
Down
- 1. the response of a plant to the pull of gravity
- 2. a small opening in the epidermal layer of a leaf that allows gases in and out
- 3. plant vascular tissues that carries sugars produced by leaves to various parts of the plant
- 5. process where plants use light energy to produce food in the form of carbohydrates
- 8. a type of xylem cell
- 9. a combination of organs and tissues that perform a shared complex function
- 12. the tendency of water molecules to stick to other water molecules
- 14. lens shaped openings perforating the bark of woody plants such as trees, allowing gas exchange between the environment and the living cells bellow the bark
- 16. environmental factors that induce a response from an organism