Seed Plants

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Across
  1. 3. The unusual anatomy of C4 plants
  2. 5. The sterile structure surrounding an ovule
  3. 7. The ovaries of Proteaceae and Leguminosae have this structure
  4. 8. The specialized seed-bearing branches of conifers
  5. 11. Specialized styles that initially bear pollen in Proteaceae and Compositae
  6. 14. The placentation of orchid ovaries
  7. 15. The combination of the 4 pollen grains of a spore mother cell
  8. 16. The stellar arrangement of monocotyledons
Down
  1. 1. the inner bract of a grass floret
  2. 2. The unusual pollen of epacrids with only 1 functional grain
  3. 4. Sticky glands attached to the pollen masses of orchids
  4. 6. The secondary wood of cycads
  5. 7. The specialized pollen-bearing leaves of cycads and conifers
  6. 9. The unit of the gynoecium
  7. 10. Aggregated pollen masses of Orchidaceae
  8. 11. Stalks of most flowers and of grass spikelets
  9. 12. The typical number of nuclei in an embryo sac
  10. 13. Ovaries derived from the fusion of gynoecial units
  11. 14. Where the male organs mature ahead of the females
  12. 17. Single-seeded, indehiscent fruits of daisies
  13. 18. The distinctive pollen of the eudicots