Across
- 2. has three pairs of legs
- 5. the largest and most complex canal system
- 8. have five or more legs
- 9. one of the three parts of an arthropod
- 10. it is between the germ layers is a gelatinous matrix
- 13. lack of vertebral column
- 17. worms with elongated bodies divided into ringlike segments
- 18. canal system are larger than aconoids
- 19. have shells consisting with 2 valves made in calcium carbonate
- 20. a canal system that is shaped like a simple tube perforated by spores
Down
- 1. it is thrive in moist,damp places and in freshwater habitat
- 3. one pair of legs per segments
- 4. it is a phylum that has stinging nettle
- 6. have unsegmented bodies that are flattened dorosoventrally
- 7. intestinal parasites of vertebrates including humans
- 11. has 2pair of legs per segment
- 12. animals with jointed legs
- 14. have 4 pairs of legs
- 15. is a tubular sessile form on jellyfish
- 16. they are called the simplest animals