Q.

The active form of Entamoeba histolytica feeds upon

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a

erythrocytes, mucosa and submucosa of colon

b

food in intestine

c

blood only

d

mucosa and submucosa of colon only.

answer is C.

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Detailed Solution

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The trophozoites of Entamoeba histolytica secretes proteolytic enzymes which partially dissolves and loosens the mucosa, submucosa and blood capillaries of the colon wall. It feeds upon erythrocytes, mucosa and submucosa of colon which leads to amoebiasis.

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The active form of Entamoeba histolytica feeds upon