Across
- 4. Bacteria that fixes nitrogen.
- 5. Used for starch test.
- 6. Make their own food.
- 7. Process of taking food and its utilization by body.
- 8. Shows symbiosis.
Down
- 1. Feed on dead and decayed organic matter.
- 2. Organism that cannot prepare their own food.
- 3. Parasite live on it.