Class 12 NEET Biology Human Health and Diseases Questions Part 1

(a) : Common cold is a viral disease. It is caused by Rhino viruses. It causes fever and pain all over the body and affects the nose, throat and air passages. AIDS (Acquired immuno deficiency syndrome) is a disorder of cell mediated immune system of the body. It is caused by HIV (Human immunodeficiency virus). HIV is a retrovirus that attacks helper T-cells.