Across
- 4. Egg-producing organs
- 6. Cells responsible for forming any body part
- 8. Process by which planaria regrow missing body parts
- 9. Slippery substance secreted to help it glide
- 11. The genus name for brown planaria
- 13. This type of muscle makes the worm longer when it contracts
- 15. These body parts sense chemicals like a “nose”
- 16. These worms are flat-bodied animals in the phylum Platyhelminthes
Down
- 1. Diffusion removes this waste gas
- 2. Clusters of nerve cells under the eyespots
- 3. Acts like a “stomach” with side pockets for digestion
- 5. Creatures that have both male and female reproductive organs
- 7. Sperm-producing organs
- 10. Tube used to take in food
- 11. The main process by which planaria get oxygen
- 12. Tiny hairlike structures that beat to help planaria glide
- 14. These accelerate chemical reactions during digestion
- 16. These collect wastes and push them out tiny pores