NEET Biology Chapter Wise Mock Test – Body Fluids and Circulation
1. Which of the following is not correct?
(a) Neutrophils are most abundant RBCs
(b) Rtf person, if exposed to Rh+ blood will form specific antibodies against the Rh antigens
(c) Fishes have 3 chambered heart
(d) Calcium ions play a very important role in clotting
2. What is correct regarding leucocytes?
(a) These can squeeze out through (can cross) the capillary walls
(b) These are enucleate
(c) Sudden fall in their number indicates cancer
(d) These are produced in thymus
3. RBCs are nucleated in
4. Heart of earthworm occur in segments
(a) 6, 7 and 9,10
(b) 7, 9 and 12, 13
(c) 9, 10 and 14, 15
(d) None of these
5. Erythropoietin is a hormone secreted by kidney cells. It stimulates the
(a) native immunity
(b) blood clotting
(c) RBCs production in bone marrow
(d) acquired immunity
6. Granules are not visible in
7. In an adult, the majority Of leucocytes are
8. The chief function of the serum albumin in the blood is to
(a) produce antibodies
(b) form fibrinogen
(c) maintain colloidal osmotic pressure
(d) remove waste products
9. Which one of the following blood cells is involved in antibody production?
10. The intrinsic factor necessary for the complete maturation of red blood cells is derived from
(a) bone marrow
(d) mucosa of the stomach
11. A haemoglobin measurement of 15 g /100 mL (or 1 dL) of blood is
(a) within the normal limits
(c) above normal
(d) low, but satisfactory
12. A differential blood count
(a) gives the number of red blood cells per cubic millimeter
(b) determines the percentage of erythrocytes per cubic millimeter
(c) gives the number and variety of leucocytes in each 200 counted
(d) determines the platelet count
13. Oxygen carrying capacity of blood is
14. Which of the following cells do not exhibit phagocytotic activity?
15. One of the common symptoms observed in people infected with dengue fever is
(a) significant decrease in RBCs count
(b) significant decrease in WBC count
(c) significant decrease in platelet -_>unt
(d) significant increase in platelets count
16. Which of the following type of cells lack nucleus in blood?
17. Which of the following option describes all the components of human blood?
(a) A and B blood group
(b) AB and O blood group
(c) Rh and ABO blood group
(d) Rh and AB blood group
18. Grouping of ABO blood is based on the
(a) surface antigens present on RBCs
(b) surface lipids present on the cell membrane
(c) nature of all constituents
(d) nature of RBC and WBC
19. Choose the correct option for X, Y and Z
20. Which of the following statements is incorrect?
(a) A person of ‘O’ blood group has anti ‘a’ and anti ‘b’ antibodies in his blood plasma ,
(b) A person of ‘B’ blood group can’t donate blood to a person of ‘A’ blood group
(c) Blood group is designated on the basis of the presence of antibodies in the blood plasma
(d) A person of AB blood group is universal recipient
21. Individuals having Rh antigen are called
(a) Rh negative.(Rh-ve)
(b) Rh positive (Rh +ve)
(c) Rh (±)
(d) Rhesus positive
22. What will happen if an Rh -ve person is exposed to the
Rh +ve person?
(a) Antigen formation takes place .
(b) -veand +veRh antigen cancel out each other
(c) Nothing will happen
(d) Antibody will form
23. Example of Rh incompatibility is
(a) mother Rh-ve and father Rh +ve
(b) father Rh-ve and mother Rh +ve
(c) Both Rh -ve
(d) Both Rh +ve
24. Erythroblastosis foetalis is a disease in which
(a) adult have severe anaemia and jaundice
(b) female have^vere anaemia and jaundice
(c) male have s’ anaemia and jaundice
(d) foetus have severe anaemia and jaundice
25. Which of the following four components of the blood are necessary for clotting?
(a) Calcium, vitamimK, albumin and globulin
(b) Calcium, prothrombin, fibrinogen and platelets
(c) Calcium, heparin, prothrombin and fibrinogen
(d) Calcium, prothrombin, platelets and vitamin-A
26. Vitamin-K (phylloquinone) is required for the synthesis of prothrombin necessary for
(a) blood clotting .
(c) muscle contriction
(d) muscle relaxation
27. Mark the pair of substances among the following which is essential for coagulation of blood.
(a) heparin and calcium ions
(b) calcium ions and platlet factors
(c) oxalates and citrates
(d) platelet factors and heparin
28. In comparison to blood, lymph has
(a) no plasma
(b) plasma without proteins
(c) more WBCs and no RBCs
(d) More RBCs and less RBCs
29. Lymph is a colourless fluid containing specialised
(d) long lined cells
30. Which of the following statement is incorrect about the lymph.
I. Lymph is colourful as it has haemoglobin but no
II. The fluid present in the lymphatic system is called lymph,
III. It contains specialised lymphocytes which are responsible for the immunity of the body.
IV. Lymph is an important carrier for nutrients and hormones.
V. Fats are absorbed through the lymph in the lacteals present in the intestinal villi.
Choose the correct option.
(a) Only I
(b) III and IV
(c) II and III
(d) Only IV
31. Select the lymphoid organs from the given choices.
I. Lymph node II. Thymus gland
III. Red bone marrow IV. Liver
V. Spleen VI. Osteocytes
VII. Peyer’s patches
The correct option with correct choices is
(a) I, II, III and IV
(b) IV, V, VI and VII
(c) III, IV, V and VI
(d) I, II, IV, V and VI
32. Which one of the following has an open circulatory system?
33. As compared to arteries, veins
(a) contain more muscles
(b) appear more rounded
(c) stretch more
(d) are under a greater pressure
34. Resistive vessels of the circulatory system are
(a) large arteries
(b) large veins
(c) small arteries and arterioles
(d) small veins and venules
35.Discontinuous or fenestrated capillaries are found in
(b) adipose tissue
(d) small intestine
36. Compared to veins, arteries contain a thicker
(b) tunica intima
(c) tunica media
(d) tunica adventitia
37. The blood vessels that are under the greatest pressure are
(a) large arteries
(b) small arteries
38. How many hearts are found in earthworm?
(a) 8 (four pairs)
(b) 2 (one pair)
(c) 6 (three pairs)
(d) 12 (six pairs)
39. Which of the following blood vessels in the circulatory system of frog has more oxygenated blood?
(a) Pulmocutaneous artery
(b) Pulmocutaneous vein
(c) Pulmonary artery
(d) Precaval veins
40. The valve, located on the same side of the heart as the pulmonary semilunar valve is the
(a) tricuspid valve
(b) mitral valve
(c) bicuspid valve
(d) aftrtic semilunar valve
41. Which of the following has the thickest walls?
(a) Right ventricle
(b) Left ventricle
(c) Right auricle
(d) Left auricle
42. The pacemaker of heart is
(a) AV node
(b) SA node
(c) Tricuspid valve
(d) SV node
43. Blood vessels are poorly developed in cockroach and open into
44. Return of blood to the heart is not facilitated by
(a) venous valves
(b) the skeletal muscle pump
(c) skeletal muscle groups
(d) venous pressure
45. The correct sequence for blood entering the heart through the venae cavae and leaving through the aorta is
(a) right atrium, left atrium, left ventricle, right ventricle
(b) left ventricle, left atrium, right ventricle, right atrium
(c) right atrium, right ventricle, left atrium, left ventricle
(d) left atrium, left ventricle, right atrium, right ventricle
46. The Sino-Atrial Node (SA Node) is situated in the wall of the
(a) right atrium
(b) interventricular septum
(c) pulmonary trunk
(d) superior vena cava
47. When the atrioventricular bundle is completely interrupted the
(a) atria beat at an irregular rate
(b) ventricles typically contract at 30-40 beats/min
(c) PR intervals in the ECG are longer than normal but remain constant from beat to beat
(d) QRS complex varies in shape from beat to beat
48. In adult man, normal BP is
(a) 100/80 mm Hg
(b) 120/80 mm Hg
(c) 100/120 mm Hg
(d) 80/120 mm Hg
49. Which factor is not synthesised in haemophilia-A?
(a) VIII (b) VII
(c) IX (d) XIII
50. The impulse of heartbeat originates from
(a) SA node
(b) vagus nerve
(c) cardiac nerve
(d) AV node
51. An artificial pacemaker is implanted subcutaneously and connected to the heart in patients
(a) having 90% blockage of the three main coronary arteries
(b) having a high blood pressure
(c) with irregularity in the heart rhythm
(c) suffering from arteriosclerosis
52. The second heart sound (dubb) is associated with the closure of
(a) tricuspid valve
(b) semilunar valve
(c) bicuspid valve
(c) tricuspid and bicuspid valve
53. What would be the cardiac output of a person having 72 beats per minute and a stroke volume of 50 mL?
(a) 360 mL
(b) 7200 mL .
(c) 3600 mL
(d) 5000 mL
54. To clearly hear the sound of the bicuspid valve, a stethoscope should be placed to the
(a) right of the sternum at the second intercostal space
(b) left of the sternum at the second intercostal space
(c) left of the sternum at the fifth intercostal space inferior to the nipple
(d) right of the sternum at the fifth intercostal space
55. Which of the following is not a condition of late diastole?
(a) The atria and ventricles are relaxed
(b) The AV valves are open ‘
(c) The aortic semilunar valve is open
(d) Both (a) and (c)
56. Which among the following is correct during each cardiac cycle?
(a) The volume of blood pumped out by the right and left ventricles is same
(b) The volume of blood pumped out by the right and lleft ventricles is different
(c) The volume of blood received by each atrium is different
(d) The volume of blood received by the aorta and pulmdnary artery is different
57. The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is
(a) SA node AV node Purkinje fibre AV bundle
(b) SA node Purkinje fibre AV node AV bundle
(c) SA node AV node AV Bundle Purkinje fibre
(d) SA node Purkinje fibre AV Bundle AV node
58. Cardiac activity could be moderated by the autonomous neural system. Tick the correct answer.
(a) The parasympathetic system stimulates heart rate and stroke volume
(b) The sympathetic system stimulates heart rate and stroke volume
(c) The parasympathetic system decreases the heart rate but increase stroke volume
(d) The sympathetic system decreases the heart rate but increase stroke volume
59. Read the following statements and choose the correct option.
Statement I Atria receive blood from all parts of the body which subsequently flows to ventricles.
Statement II Action potential generated at sino-atrial node passes from atria to ventricles.
(a) Action mentioned in statement I is dependent on action mentioned in statement II
(b) Action mentioned in statement II is dependent on action mentioned in statement I
(c) Action mentioned in statements I and II are independent of each other.
(d) Action mentioned in statements I and II are synchronous
60. Which of the following is not the part of pulmonary circuit?
(a) The left atrium
(b) The pulmonary trunk
(c) The aortic semilunar valve
(d) The pulmonary vein
61. During ventricular contraction
(a) all the blood is forced out of the ventricles
(b) some of the blood remains in the ventricles
(c) no blood is forced out of the ventricles
(d) some blood backflows into the atria
62. An increase in cardiac output follows all of the following except
(b) physical exercise
(d) parasympathetic stimulation through the vagus (X cranial) nerves
63. The lub sound of the heart is due to
(a) closing of the semilunar valves
(b) closing of the AV valves
(c) blood rushing out of the ventricles
(d) filling of the ventricles
64. Which of the following.correctly explains a phase/event in cardiac cycle in a standard electrocardiogram?
(a) QRS complex indicates atrial contraction
(b) QRS complex indicates ventricular contraction
(c) Time between S and T represents atrial systole
(d) P-wave indicates beginning of ventricular contraction
65. ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.
(a) Depolarisation of atria
(b) Repolarisation of atria
(c) Depolarisation of ventricles
(d) Repolarrsation of ventricles of the following animals has two separate circulatory pathway?
66. Leucopenia is the condition, in which
(a) the total number of leucocytes decreases below 5000/cu mm
(b) the total number of leucocytes increases above 6000/cu mm
(c) bone marrow is destroyed
(d) formation of leucocytes stops
67. Which pairing is incorrect?
(a) Chordae tendineae — Semilunar valves
(b) Right ventricle — Papillary muscles
(c) Left ventricle — Trabeculae carnea
(d) Right atrium — Coronary sinus
Direction (Q. Nos. 68-73) In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements, mark the correct answer as
(a) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
(c) If Assertion is true, but Reason is false
(d) If both Assertion and Reason are false
68. Assertion Pulmonary circulation includes flow of oxygenated blood from right ventricles to the lungs.
Reason The main purpose o. this circulation is purification of blood.
69. Assertion Systemic blood circulation occurs in human beings.
Reason The main purpose of this circulation is to carry oxygen and nutrients to the body tissues and to remove C02 and other wastes from the tissues.
70. Assertion Arteries carry blood from various body organs to heart.
Reason Veins carry blood from various body organs to heart.
71. Assertion Larger animals have a higher heart rate than smaller animals.
Reason Metabolic rate of smaller animals is higher than larger animals.
72. Assertion Left ventricle of heart has thickest wall than that of right ventricle.
Reason Right ventricle need to pump blood to nearby lungs only.
73. Assertion Cardiovascular system involves blood, blood vessels and heart.
Reason The human circulatory system is composed of heart, vessels and blood.
74. Match the following columns.
A B C D
(a) 5 2 1 3
(b) 2 5 1 3
(c) 1 2 3 4
(d) 2 1 4 5
75. Which one of the following animals has two separate circulatory pathways?
76. Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when
(a) AV valves open up
(b) Ventricular walls vibrate due to gushing in of blood from atria
(c) Semilunar valves close down after the blood flows into vessels from ventricles .
(d) AV node receives signals from SA node
77. If you suspect major deficiency of antibodies in a person to which of the following would you look for confirmatory evidence?
(a) Fibrinogen is plasma
(b) Serum albumin
(d) Serum globulins
78. Blood pressure in the mammalian aorta is maximum during
(a) systole of the atrium
(b) diastole of the right ventricle
(c) systole of the left ventricle
(d) diastole of the right atrium
79. Which one of the following is correct?
(a) Plasma= Blood – Lymphocytes
(b) Serum = Blood + Fibrinogen
(c) Lymph = Plasma +RBC + WBC
(d) Blood = Plasma + RBC + WBC + Platelets
80. Person with blood group AB is considered as universal recipient because he has
(a) Both A and R antigens on RBC but no antibodies ‘
(b) Both A and B Antibodies in the plasma
(c) No antigen on RBC and no antibody in the plasma
(d) Both A and B antigens in the plasma but no antibodies
81. The diagram given here is the standard ECG of a normal person. The P-wave represents the
(a) initiation of the ventricular contraction
(b) beginning of the systole
(c) end of systole
(d) contraction of both the atria
82. Figure shows schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function
(a) B-Pulmonary artery-takes blood from heart to lungs, p02 = 90 mmHg
(b) C-Vena cava takes blood from bddy parts to right auricle, pC02 = 45 mmHg2801
(c) D-Dorsal aorta-takes blood from heart to body part, p 02 =95 mmHg
(d) A-Pulmonary vein-takes impure blood from body parts, p 02 = 60 mmHg
83. In a certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?
(a) Blood group B
(b) Blood group AB
(c) Blood group O
(d) Blood group A
84. Compared to those of humans, the erythrocytes in frog are
(a) without nucleus but with haemoglobin
(b) nucleated and with haemoglobin
(c) very much smaller and fewer
(d) nucleated and without haemoglobin
85. People who have migrated from the planes to an area adjoining Rohtang Pass about six months back
(a) have more RBCs and their haemoglobin has a lower binding
affinity to 02 !
(b) are not physically fit to play games,like football
(c) suffer from altitude sickness with symptoms like nausea, fatigue, etc.
(d) have the usual RBC count but their haemoglobin has very high binding affinity to 02
86. Which one of the following statements is correct regarding blood pressure?
(a) 100/55 mmHg makes is considered on ideal blood pressure
(b) 100/50 mmHg makes one very active
(c) 190/110 mmHg may harm vital organs like brain and kidney
(d) 130/90 mmHg is considered high and requires treatment
87. Arteries are best defined as the vessels, which
(a) carry blood away from the heart to different organs
(b) break up into capillaries, which reunite to form a vein
(c) carry blood from one visceral organ to another visceral organs
(d) supply oxygenated blood to the different organs