Across
- 2. is necessary for photosynthesis.
- 4. are organisms that live in or on other living oraganismsand derive their food from them.
- 5. helps keep the plant rigid and upright.
- 6. dioxide is necessary for photosynthesis.
- 7. grow on shoes,clothes,pickles etc...
- 8. vessels are pipe like structures.
Down
- 1. is an autotroph.
- 3. converts atmospheric nitrogen into water soluble compounds.