Across
- 3. Developmental process in animals.
- 4. Leaves of ferns.
- 6. Hard outer covering in arthropods.
- 11. Fluid-filled skeleton type.
- 12. Structure for storing ingested material.
- 13. Small leaf opening for gas exchange.
- 16. Plants with two-year life cycles.
- 17. All plants produce this simple sugar.
- 19. Rootlike structures in bryophytes for anchoring.
- 20. Cone-bearing seed plants belong to this group.
- 21. Organs for oxygen diffusion in aquatic animals.
- 22. Muscle contractions moving food through the digestive tract.
- 24. Grasses and trees have this tissue for nutrient transport.
- 25. Symmetry type seen in jellyfish.
- 26. Vascular tissue for water transport.
- 28. Animals with backbones.
Down
- 1. Waxy protective layer on leaves, stems, and flowers.
- 2. Phylum including snails and squid.
- 5. Flexible support structure in chordates.
- 7. Wavelike motion in certain animals.
- 8. Vascular tissue for nutrient transport.
- 9. Plants make their own food during this process.
- 10. Muscular pouch for grinding food.
- 14. Measurement of food energy.
- 15. Netlike control system in some animals.
- 18. Layer producing new vascular tissue.
- 23. Animals without backbones.
- 27. Seed structure in gymnosperms.