Which of the following is a pair of transgenic organisms?

a) an amoeba and a hybridized peach tree

b) a bt corn plant and a polyploid banana tree

c) a hybridized peach tree and a polyploid banana tree

d) bacteria that make human insulin and a bt corn plant

The correct answer would be d) bacteria that make human insulin and a Bt corn plant.

An organism that contains and/or expresses a transgene or foreign gene is termed transgenic organism.

Bacteria that make human insulin contain and express human genes which code for A and B chain of insulin.

Similarly, Bt cotton is also a transgenic organism as it contains and expresses cry gene isolated from bacterium Bacillus thuringiensis. It provides pest resistance to the plant.

Thus, option d contains a pair of transgenic organisms.