Across
- 4. helps to maintain the balance between oxygen and carbon dioxide
- 7. cells that control the opening and the closing of a stomata
- 8. most important gas needed for photosynthesis
- 9. animals and non green plants
Down
- 1. take water and mineral from the host plant.
- 2. ______helps to keep a plant rigid and upright
- 3. conducting tissue in a plant
- 5. another name for parasite
- 6. the process of taking in food by an organism and its utilization by the body is called______
- 10. a symbiotic relation used for replenishing the soil