Which describes why radioisotopes can be used as tracers in studying the biological and chemical processes of plants?

Radioisotopes of an element have the same chemical behavior as its nonradioactive isotopes, so a plant takes them up and uses them in the same ways. Their radiation can then be detected to track where they move or what processes they participate in. Therefore, the correct choice is “The radioisotope is chemically identical to the nonradioisotope the plant normally uses.”

AI-written and checked against the verified answer.