Dmitri Ivanovski demonstrated that TMV was not spread via bacteria by
A)transmitting sap of infected plants from generation to generation
B)filtering sap from an infected plant through pores smaller than bacteria,and then applying it to a healthy plant
C)spraying sap from an infected plant onto a healthy plant
D)sterilizing sap from an infected plant and then applying it to a healthy plant
E)treating an infected plant with a broad spectrum of antibiotics before extracting sap

Question

Quizplus · Accepted Answer

Dmitri Ivanovski's experiment involved filtering the sap from an infected plant through pores smaller than bacteria (such as porcelain), which showed that the infectious agent was not a bacterium. He then applied this filtered sap to a healthy plant, which also became infected with the disease, proving that the infectious agent was smaller than bacteria and likely a virus.

Dmitri Ivanovski Demonstrated That TMV Was Not Spread Via Bacteria