A) erythrocytes mucosa and submucosa of colon
B) mucosa and submucosa of colon only
C) food in intestine
D) blood only
Correct Answer: A
Solution :
The trophozoites of Entamoeba secretes proteolytic enzymes which partially dissolves and loosens the mucosa, submucosa and blood capillaries of the colon wall. On entering the colon, it actively ingests intenstinal tissues and RBCs. Serious damage ulceration are observed in the colon wall. Thus, E. histolytica feeds on erythrocytes, mucosa and submucosa of colon which leads to amoebiasis.
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