Biology

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Across
  1. 2. Lives 1 season
  2. 6. Sea anemone, jellyfish, hydroid, coral
  3. 8. Gymnosperms, angiosperms
  4. 10. Bivalve, cephalopod, gastropod
  5. 12. Skin of scales or plates, eggs
  6. 13. Needs 2 seasons to develop; then dies
  7. 14. Sponges
  8. 15. Feathers, eggs
Down
  1. 1. Shrimp, crabs, lobsters
  2. 3. Horsetails, club mosses, ferns/spores
  3. 4. Seeds in an ovary
  4. 5. Seeds in cones
  5. 7. Lives 3+ years
  6. 9. Double life, eggs
  7. 11. Scales, gills, eggs