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41.

Quinine, used as remedy for malaria is extracted from:

A.	Bark of Cinchona plant	B.	Bark of Cineinon
C.	Oscimum leaves	D.	None of these

42.

Prepatient period in plasmodium falciparum is:

A.	8 days	B.	5
C.	14 - 15 days	D.	9 days

43.

Bening and tertian malaria is caused by:

A.	Plasmodium vivax	B.	Plasmodium ovale
C.	Both (a) & (b)	D.	None of these

44.

Sporogony of malarial parasite occurs in:

A.	Liver of man	B.	Stomach of mosquito
C.	RBC of man	D.	None of these

45.

What will happen to contractile vacuole of Amoeba if a fresh water amoeba is kept in a medium of high osmotic potential?

A.	It will work faster	B.	It will remain unaffected
C.	It will stop forming	D.	It will remain unaffected

46.

Which of these protozoan is unlikely to have a contractile vacuole:

A.	Paramecium caudatum	B.	Plasmodium
C.	Euglena	D.	Amoeba proteus

47.

What will happen if a marine protozoan is transferred to fresh water:

A.	It bursts	B.	It enlarges but shrinks again
C.	It shrinks	D.	It does not have any effect

48.

Amoebic dysentery is caused by:

A.	Entamoeba histolytica	B.	E. Coli
C.	E.Gingivolis	D.	None of these

49.

Recurrence of fever after every 72 hours occurs in:

A.	Malignant tertian malaria	B.	Benign tertian malaria
C.	Quartan malaria	D.	Quotidian malaria

50.

Black water fever' is caused by:

A.	Plasmodium ovale	B.	P.malariae
C.	P. vivax	D.	P. falciparum