191. Blood group $$AB$$  has

A no antigen
B no antibody
C neither antigen nor antibody
D both antigen and antibody
Answer :   no antibody
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192. How many contraction nodes are found in heart of Rabbit

A One
B Two
C Many
D To act as haemopoitic tissue in embryo
Answer :   Two
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193. Oxygenated blood is carried by

A Pulmonary artery
B Pulmonary vein
C Renal vein
D Presence of globulin protein
Answer :   Pulmonary vein
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194. PH of blood in arteries and veins is

A More in veins and less in arteries
B More in arteries and less in veins
C Same
D Mammary glands
Answer :   More in arteries and less in veins
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195. Pace-maker in heart is situated

A In the wall of left atrium
B In the wall of right atrium
C On inter-ventricular septum
D On inter-auricular septum
Answer :   In the wall of right atrium
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196. Typical 'lubb-dup' sounds heard in heart beat are due to

A Closing of bicuspid and tricuspid valves
B Closing of semilunar valves
C Blood under pressure through aorta
D None of the above
Answer :   None of the above
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197. Pacemaker of heart is

A AV node
B Bundle of His
C SA node
D Purkinje fibres
Answer :   SA node
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198. Heart beat is accelerated by

A Sympathetic nerves and acetylcholine
B Cranial nerves and adrenaline
C Cranial nerves and acetylcholine
D Sympathetic nerves and epinephrine
Answer :   Sympathetic nerves and epinephrine
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199. Haemophilia is

A royal disease
B faulty blood clotting
C both (A) and (B)
D mosquito having haemocoel
Answer :   both (A) and (B)
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200. Glucose is carried from digestive tract to liver by

A Hepatic artery
B Hepatic portal vein
C Pulmonary vein
D None of the above
Answer :   Hepatic portal vein
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