Sexual reproduction in flowering plants

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Across
  1. 2. diploid secondary nucleus
  2. 3. male gametes formed
  3. 4. papaver
  4. 5. pollen allergy
  5. 9. single pistil
  6. 10. pollen tube
  7. 11. nutritive tissue in ovule
  8. 12. integument absent in the ovule
  9. 13. genetically different pollen grains involved
  10. 14. single megaspore into embryosac
Down
  1. 1. exine
  2. 4. filiform apparatus
  3. 6. china rose
  4. 7. closed flowers
  5. 8. nourishes the developing pollen grains