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Across 1. the removal of anthers of a flower to prevent self - pollination 9. soil bacterium that produces hairy root disease 11. a substance that prevents the freezing of tissue,or prevents damage to cells 13. the transfer living cells, tissue, or organs from animal or plant 16. an individual that has two of the same allele whether dominant or recessive 19. developing compounds outside of an organism 21. the mixing of cells defined by cytology 22. alteration of substance such as drug within the body 24. type of culture in which intact cells are maintain in culture medium 25. a plant hormone causes elongation of cells in shoots

Down 2. growing plantlets in tissue culture 3. gel for growing microorganism 4. causal agent of crown gall disease (formation of tumours) 5. a pair or genes where one is dominant and recessive 6. the growth in an artificial medium of cells 7. genetic constitution of an individual organism 8. modifying exogenous substance by plant cells 10. a colorless liquid used as a solvent and synthetic reagent 12. converting organic matter into energy through the action of microorganism 14. a eukaryotic cells line produced by fusion of a whole cell with cytoplast 15. the use of a combination nuclear fusion and fission processes 17. a multinucleate cell that contains genetically different nuclei 18. a young shoot or twig of a plant 20. a group of substances formed in body tissue in response to injury 23. a hard formation of tissue formed over a wound