BIOLOGY

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Across
  1. 5. transfer of pollen grains to stigma
  2. 6. 3 layered hard covering secretes by amoeba
  3. 7. specialised cells in diploid organisms
  4. 8. a pre fertilisation event
Down
  1. 1. develeopment of embryo
  2. 2. a mode of asexual reproduction
  3. 3. asexual reproduction of single celled organism
  4. 4. shell covering of fertilised eggs in oviparous animal