Across
- 3. Circulatory system: Closed type
- 4. shows Bioluminescence
- 6. Body divisible into head, visceral ,foot
- 7. Ecdysis (moulting) present
- 8. Antennary glands or Malpighian tubules
- 11. Sea lily
Down
- 1. tentacles for food collection and defence
- 2. Water vascular system for locomotion
- 5. apple snail
- 9. protonephridia with flame cells
- 10. Economically imp arthropoda