Across
- 1. hollow cells with a lignin spiral for support
- 4. hollow cells with companion cells and seive plates
- 5. only found in plant cells and used for photosynthesis
- 7. allows the sperm to swim to the egg
- 8. allows transport of substances in and out of cells
- 10. these cells have a membrane-bound nucleus
- 11. this is increased by the root hair cell being long and thin
- 12. muscle cells are able to do this to get shorter
Down
- 2. organelle in the cell where respiration occurs
- 3. protects plant cells from bursting under osmotic pressure
- 6. these cells are small with loops of genetic information
- 9. this if found in eukaryotic cells and contains DNA