Across
- 9. : Essential substances that plants and animals need for growth and survival
- 10. : Green pigment that helps in photosynthesis
- 11. : Small openings in leaves through which gas exchange occurs
- 12. : Mode of nutrition where organisms prepare their own food
- 14. : Tissue that transports food from leaves to other parts of the plant
- 15. : Tissue that transports water and minerals in plants
Down
- 1. : Process by which green plants make food using sunlight
- 2. : Mode of nutrition where organisms depend on others for food
- 3. dioxide : Gas taken in by plants for photosynthesis
- 4. fixation : Process where lightning helps convert nitrogen gas into usable forms
- 5. : Absorbed by roots, necessary for photosynthesis
- 6. : The process by which organisms take in and use food
- 7. : Simple sugar formed as a result of photosynthesis
- 8. : Main source of energy for photosynthesis
- 13. : A bacteria that fixes nitrogen in legume root nodules