Question. The blood groups in man were discovered by –
(A) Mendel
(B) S. Miller
(C) Landstiener
(D) Francis Nelton
Answer: C
Question. pH of human blood varies between –
(A) 6.0 to 7.0
(B) 7.3 to 7.4
(C) 7.5 to 8.0
(D) 7.0 to 8.0
Answer: B
Question. Mammalian heart is –
(A) Digenic
(B) Myogenic
(C) Neurogenic
(D) None of these
Answer: B
Question. Urea is transported by –
(A) WBC
(B) Haemoglobin
(C) Plasma
(D) RBCs
Answer: C
Question. What is blood pressure ?
(A) The pressure of blood exerted on the walls of arteries and veins
(B) The pressure of blood on the heart muscle
(C) The pressure of blood on the walls of veins only
(D) The pressure of blood excerted on the wall of arteries
Answer: D
Question. Mammals are said to have a "Double circulation system" This means –
(A) That there are two types of blood vessels attached to every organ; an artery and a vein
(B) That there are two system; one from the heart to the lungs and back to the heart and other to and from rest of the body
(C) That the blood vessels are paired
(D) That the blood circulates twice as quickly.
Answer: B
Question. Polycythemia is –
(A) Increased RBCs count
(B) Decreased WBCs count
(C) Increased WBCs count
(D) Decreased platelets count
Answer: A
Question. The coagulation of blood occurs due to –
(A) Change of fibrinogen in the network of fibrin
(B) Destruction of erythrocytes
(C) Distruction of leucocytes
(D) Fromation of serum.
Answer: A
Question. Heart is incompletely 3-chambered in –
(A) Fishes
(B) Amphibians
(C) Reptiles
(D) Birds
Answer: C
Question. Valves are not found in –
(A) Arteries
(B) Veins
(C) Heart
(D) Lymphatics
Answer: A
Question. As compared to artery, a vein has –
(A) Thinner wall
(B) Large lumen
(C) Valves
(D) All of these
Answer: A
Question. Life span erythrocytes is –
(A) One year
(B) Six months
(C) One weak
(D) Four months
Answer: D
Question. Cells formed in bone marrow include –
(A) RBC
(B) RBC and Leucocytes
(C) Leucocytes
(D) Lymphocytes
Answer: B
Question. Heart covering is called –
(A) Peritoneum
(B) Pleural membrane
(C) Pericardium
(D) Visceral membrane
Answer: C
Question. Who discovered blood circulation in human body ?
(A) Lamarck
(B) Mendel
(C) Harvey
(D) Bose
Answer: C
Question. Where are granulocytes formed ?
(A) In kidney
(B) In Liver
(C) In red bone marrow
(D) In small intestine
Answer: C
Question. Antibodies are produced by –
(A) Lymphocytes
(B) Spleen
(C) Leucocytes
(D) Monocytes
Answer: A
Question. The following blood vessel does not contain deoxygenated blood.
(A) Pulmonary artery
(B) vena Cava
(C) Hepatic Vein
(D) Pulmonary Vein
Answer: D
Question. The direction of movement of sap in Phloem of higher plants can be
(A) Unidirectional
(B) Multidirectional
(C) Bidirectional
(D) Direction less
Answer: C
Question. What is the name of the blood vessels that provide nutrition of the heart wall ?
(A) Pulmonary Arteries
(B) Coronary arteries
(C) Pulmonary Veins
(D) Descending
Answer: B
Question. Antibodies are complex
(A) Lipoproteins
(B) Steroids
(C) Prostaglandi ns
(D) Globulin Proteins
Answer: D
Question. What will happen if diametern of artery is reduced ?
(A) Blood pressure will fall
(B) Blood pressure will increase
(C) Blood pressure will remain same
(D) Blood will coagulate
Answer: B
Question. Functionof Lenticels in plant is
(A) Photosynthesis
(B) Excretion
(C) Respiration
(D) Coordination
Answer: C
Question. Blood flows from legs to heart through the veins against the gravity. How is it possible ?
(A) Thickness of vein's wall
(B) Less rigid walls of veins
(C) Valves in the veins
(D) Rigid walls of veins
Answer: C
Question. The rate of transpiration in plants will be least
(A) When there is a high humidity in the atmosphere
(B) There is excess of water in the cell
(C) Environmental conditions are very dry
(D) High velocity of wind
Answer: A
Question. Blood clotting is initiated by :
(A) Prothrombin and thromboplatin
(B) Ca++ and thromboplastin
(C) Fibrinogen and Ca++
(D) Fibrinogen and thromboplastin
Answer: B
Question. Normal human blood pressure is
(A) 80/120 mm of Hg
(B) 120/80 mm of Hg
(C) 100/80 mm of Hg
(D) 80/100 mm of Hg
Answer: B
