Across
- 5. → Rigid outer covering of chitin; protection + muscle attachment.
- 7. → Sensory appendages for touch, taste, smell.
- 10. → External openings for tracheal breathing in insects.
- 11. → Posterior extension, often in crustaceans (e.g., tail fan in crayfish).
- 13. → Pincer/fang-like feeding appendages in arachnids.
- 14. appendages → Paired, specialized structures for locomotion, feeding, sensory.
- 16. → Middle body region (insects, bears legs/wings).
- 17. lungs → Respiratory organs with stacked lamellae in spiders.
- 19. → Pair of appendages near mouth; sensory or feeding role.
Down
- 1. → Jaw-like appendages for chewing.
- 2. → Jointed appendages for walking.
- 3. → Insects only; extensions of exoskeleton used for flight.
- 4. → Fused head and thorax (crustaceans, spiders).
- 6. → Anterior region with sensory organs and mouthparts.
- 8. → Posterior body region (digestive, reproductive).
- 9. → Silk-spinning organs in spiders.
- 12. → Simple eyes detecting light.
- 15. eye → Eye with many ommatidia; wide field of view.
- 18. → Respiratory organs in aquatic crustaceans.