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Question-1
Which of the following statements is correct about veins?
(A)
They do not have valves
(B)
They carry blood towards heart
(C)
They always carry oxygenated blood
(D)
They always carry de-oxygenated blood
Question-2
Pacemaker is
(A)
SA-node
(B)
AV-node
(C)
SV-node
(D)
VA-node
Question-3
The heart sound 'dup' is produced when
(A)
Mital valve is closed
(B)
Mital valve is opened
(C)
Tricuspid valve is opened
(D)
Semi-lunar valves of aorta get closed.
Question-4
The thickening of walls of arteries is called
(A)
Arthritis
(B)
Aneurysm
(C)
Arteriosis
(D)
Arterio sclerosis
Question-5
Spiral valve is present in
(A)
Right auricle
(B)
Sinus venosus
(C)
Right ventricle
(D)
truncus arteriosus
Question-6
Thoracic duct in humans, is associated with
(A)
Aorta
(B)
Hepatic dust
(C)
Purkinje fibre
(D)
Innominate vein
Question-7
Which of the following vertebrate organ receives only oxygenated blood?
(A)
Gill
(B)
Lung
(C)
Spleen
(D)
Liver
Question-8
Large arteries have more elastic connective tissue and less smooth muscle, such as
(A)
Aorta
(B)
Atrioles
(C)
Capillaries
(D)
All of these
Question-9
Foramen ovale present only in the heart of embryos leads from the right auricle to
(A)
Left auricle
(B)
Right ventricle
(C)
Postcaval vein
(D)
Pulmonary artery
Question-10
Coeliac artery is the branch of
(A)
Dorsal aorta
(B)
Lumbar artery
(C)
Caudal artery
(D)
Pulmonary aorta
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Plus 2 Biology Science
ICSE/ISC
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