Escherichia coli
An enzyme called restriction endonuclease (EcoR I) is taken from Escherichia coli. EcoR I is used as a restriction enzyme to cut specific nucleotide sequences of DNA. This is useful in creating recombinant DNA.
Agrobacterium tumefaciens
Ti plasmid is extracted from Agrobacterium tumefaciens. This plasmid is used to transfer desired genes into the plant genome, helping in the formation of transgenic plants.
Final answer: Escherichia coli, Agrobacterium tumefaciens