Across
- 1. Where alga and fungus live together
- 5. A autotrophic plants
- 8. The vascular tissue in plants
- 10. A nitrogen-fixing bacterium
- 11. It maintain the balance between oxygen and carbon dioxide
- 12. The chemical element of atomic number 7
Down
- 2. A colourless, odourless, highly flammable gas
- 3. An organism which lives in or on another organism
- 4. A parasitic plant which lacks chlorophyll
- 6. A mutually beneficial relationship of plants
- 7. The process of taking in food by an organism
- 9. cell It controls the opening or closing of stomata