Question

Which is not a biological agent of disease?

• A. Fungi
• B. Mycoplasma
• C. Pollen
• D. Bacteria

Answer 1

The correct option is C Pollen

• A pathogen is an infectious microorganism or an agent such as a virus, bacteria, protozoan, fungus etc. which are able to cause disease.
  
• Fungi is a eukaryote which is the common cause of disease in crops and other plants. It can also cause disease in humans and animals.
• Mycoplasma is a genus of bacteria which causes diseases in humans (such as tuberculosis) and plants.
• Bacteria also cause infectious diseases in human beings and animals.
• Pollen is a fine to coarse, powdery substance comprising pollen grains which are male microgametophytes of seed plants.

So, the correct answer is option C- 'Pollen'.