Which of the following techniques is not a part of microscopy?

Correct answer: (d) Chromatography

Explanation

Chromatography is a method for separating the parts of a mixture (such as plant pigments, amino acids or proteins) as they move at different speeds through a stationary phase carried by a solvent. It is not a technique of microscopy.

The others are used with the microscope:

• plasmolysis of plant cells in a strong salt solution is observed under the microscope;
• autoradiography shows where radioactive molecules are in cells and tissues;
• maceration separates the cells of a tissue so that they can be examined one by one.