Match each disease with its correct type of vaccine: [2015]
| Column - I | Column - II | ||
| A. | Tuberculosis | (i) | Harmless virus |
| B. | Whooping cough | (ii) | Inactivated toxin |
| C. | Diphtheria | (iii) | Killed bacteria |
| D. | Polio | (iv) | Harmless bacteria |
A-(iv), B-(iii), C-(ii), D-(i)
A-(i), B-(ii), C-(iv), D-(iii)
A-(ii), B-(i), C-(iii), D-(iv)
A-(iii), B-(ii), C-(iv), D-(i)
The active form of Entamoeba histolytica feeds upon: [2015]
food in intestine
blood only
erythrocytes, mucosa and submucosa of colon
mucosa and submucosa of colon only
(3)
Entamoeba histolytica is the causative organism of amoebic dysentery or amoebiasis in man. It is a microscopic endoparasite of man. It is commonly found in the upper part of the large intestine (colon) and is very often lodged in the liver, lungs, brain and testes. In its life cycle, it occurs in three distinct forms (i) trophozoite or magna form, (ii) precystic or minuta form, and (iii) cystic form. Trophozoite is the most active, motile and feeding form which is pathogenic to man. It lives in the mucosa and submucosa layers of the colon and feeds on these layers and erythrocytes.
