CHAPTER : CIRCULATION - Bio XII Botany

ANDHERI / BORIVALI / DADAR / CHEMBUR / THANE / MULUND/ NERUL / POWAI TOPIC: CIRCULATION

1. Blood contains

(a) 45% plasma and 55% corpuscles (b) 55% plasma and 45% corpuscles (c) 60% corpuscles and 40% plasma (d) 40% corpuscles and 60% plasma 2. Human RBCs are

(a) nucleated and biconvex (b) rounded and nucleated (c) oval and nucleated

(d) circular, biconcave and non-nucleated 3. The number of RBCs present in adult female

(a) 3.5 to 4.5 million/cu.mm (b) 4.3 to 5.2 million/cu.mm (c) 5 to 9 million/ cu.mm (d) 5.1 to 5.8 million /cu.mm

4. After birth, _____ is the main site of erythropoiesis

(a) lymph node (b) bone marrow (c) spleen (d) liver 5. Increase in number of RBCs is called

(a) haematuria (b) polycythemia (c) leucopenia (d) anaemia 6. The normal haemoglobin count in adult male is

(a) 11.5-16.5 gm/ 100 ml of blood (b) 13-18 gm/ 100 ml of blood (c) 10-12 gm/ 100 ml of blood (d) 14-16 gm/ 100 ml of blood

7. _________ are freely wandering amoeboid and nucleated blood cells.

(a) Leucocytes (WBCs) (b) Erythrocytes (RBCs)

8. Leucocytes are wandering cells capable of coming out of blood capillaries by amoeboid movement called

(a) cyclosis (b) diapedesis (c) phagocytosis (d) mitosis 9. The size of leucocytes is

(a) 7 m to 25 m (b) 8 to 15 m (c) 10 to 12 m (d) 15 to 20 m

CENTERS: MUMBAI / DELHI / AKOLA / KOLKATA / LUCKNOW / NASHIK / GOA # 3

10. Maximum life span of human WBCs in blood stream is approximately

(a) less than 10 days (b) between 20-30 days (c) between 2-3 months (d) more than 4 months 11. Formation of WBC’s called

(a) erythropoiesis (b) leucocytosis (c) leucopoiesis (d) polycythemia 12. Granulocyte contains

(a) granular cytoplasm with lobed nucleus

(b) granular cytoplasm with kidney shaped nucleus.

(d) cytoplasm without granules with unlobed nucleus.

13. A polymorphonuclear granulocyte are

(a) eosinophils (b) neutrophils (c) basophils (d) acidophils 14. Increase in number of eosinophils is called

(a) eosinophilia (b) haemophilia (c) polycythemia (d) erythrocythemia 15. Lymphocyte produces

(a) heparin (b) antibodies (c) histamine (d) none of the above 16. _________ are the largest WBCs.

(a) Monocytes (b) Lymphocytes (c) Basophils (d) Neutrophils 17. _________ are smallest size blood corpuscles.

(a) Platelets (b) RBCs (c) Monocytes (d) Lymphocytes

18. Conversion of fibrinogen into fibrin is catalysed by

(a) thrombin (b) prothrombin (c) thromboplastin (d) histamine 19. Thromboplastin changes inactive prothrombin into active thrombin in presence of

(a) Fe ⁺⁺ (b) Na ⁺⁺ (c) Ca ⁺⁺ (d) Mg ⁺⁺

20. Human heart is ___________ in origin.

(a) ectodermal (b) endodermal (c) mesodermal (d) ectomesodermal 21. Outer layer of pericardium is called

(a) serous pericardium (b) fibrous pericardium (c) parietal pericardium (d) visceral pericardium 22. Epicardium is composed of

(a) endothelium (b) exothelium (c) mesothelium (d) both (a) and (b) 23. Endothelium are flat epithelial cells present in

(a) pericardium (b) epicardium (c) myocardium (d) endocardium

CENTERS: MUMBAI / DELHI / AKOLA / KOLKATA / LUCKNOW / NASHIK / GOA # 4

24. Coronary sulcus is called

(a) atrio-ventricular groove (b) interventricular groove (c) auriculo-ventricular septum (d) interventricular septum 25. Opening of coronary sinus is guarded by _____ valve.

(a) thebesian (b) eustachian (c) tricuspid (d) bicuspid 26. How many caval veins open into the right auricle in man?

(a) 1 (b) 2 (c) 3 (d) 4

27. Fossa ovalis is a remnant of an oval aperture

(a) foramen ovale (b) thebesian valve (c) Eustachian valve (d) sinus venosus 28. The opening of the upper chamber of the heart into the lower chamber is known as

(a) sino-auricular aperture (b) atrio-ventricular aperture (c) artio-ventricular septum (d) atrio-ventricular node 29. The left atrioventricular aperture in man is guarded by

(a) tricuspid valve (b) semilunar valve (c) bicuspid valve (d) thebasian valve 30. Papillary muscles are found in

(a) pylorus in vertebrate stomach (b) dermis mammalian skin (c) ventricles in mammalian heart.

(d) eye orbit of human.

31. The inner surface of the ventricle is thrown into a series of irregular muscular ridges called.

(a) columnae carnae (b) trabeculae carnae (c) chordae tendinae (d) Both (a) and (b) 32. Heart beat is defined as

(a) only contraction of heart (b) only relaxation of heart

(d) none of the above.

33. Contraction of heart is initiated by

(a) AVN (b) SAN (c) MAP (d) Node of Ranvier

34. Conduction of impulse from S.A. node moves to

(a) A.V. node (b) Bundle of His (c) Purkinje fibres (d) Cardiac muscles 35. A rhythmic contraction and relaxation of heart during one heart beat is called.

(a) heart rate (b) cardiac cycle (c) pulse rate (d) stroke volume 36. Duration of one heart beat in man is

(a) 0.8 sec (b) 0.6 sec (c) 0.2 sec (d) 0.5 sec

CENTERS: MUMBAI / DELHI / AKOLA / KOLKATA / LUCKNOW / NASHIK / GOA # 5

37. Ventricular systole lasts for

(a) 0.1 seconds (b) 0.3 seconds (c) 0.4 seconds (d) 0.6 seconds 38. One systole and diastole is known as one

(a) Pulse rate (b) Heart beat (c) Cardiac cycle (d) Heart rate 39. The cardiovascular centre lies in the ________ of the brain.

(a) medulla oblongata (b) spinal cord

40. During inspiration, heart rate increase and during expiration it falls. This phenomenon is known as (a) tachycardia (b) bradycardia (c) murmur (d) sinus arrhythmias 41. Both pulmonary and renal arteries

(a) contain oxygenated blood (b) have internal valves

(d) deliver carbon dioxide to the organs they supply 42. Hisologocally, the wall of artery is made up of

(a) tunica externa (b) tunica media (c) tunica interna (d) all of the above 43. Blood capillaries are made up of

(a) endothelium and thin coat of muscle fibres and connective tissue.

(b) endothelium and thin coat of muscle fibres and connective tissue.

44. Which of the following statement is/ are correct about capillaries?

(a) They are thickest of all blood vessels

(b) They are permeable to water and dissolved substances.

(d) Both (b) and (c)

45. The circuit in which the cardiac cycle results in the movement of blood out of the ventricles.

(a) pulmonary circuit (b) systemic circuit (c) both (a) and (b) (d) cardiac circuit 46. During each heart beat ventricles pump about 70 ml of blood. This is called

(a) heart rate (b) stroke volume (c) cardiac output (d) pulse rate 47. A condition in which rate of heart beat is increased is called

(a) angina pectoris (b) bradycardia (c) tachycardia (d) ischemia 48. The __________ at the wrist is most commonly used to feel the pulse.

(a) coronary artery (b) radial artery (c) pulmonary artery (d) systemic artery 49. Pulse rate is higher in

(a) children and females (b) person in standing position

CENTERS: MUMBAI / DELHI / AKOLA / KOLKATA / LUCKNOW / NASHIK / GOA # 6

50. Autorhythmicity is a special property of muscles of

(a) heart (b) kidney (c) liver (d) intestine

51. Cardiac muscle fibres become autorhythmic

(a) after birth (b) during embryonic development

52. Blood pressure is pressure on the wall of

(a) heart (b) veins (c) arteries (d) lungs

53. Blood pressure is lowest

(a) after muscle exercise (b) during ventricular diastole (c) after the age of 60 years (d) during ventricular systole 54. Hypertension is caused by

(a) alcohol (b) smoking (c) obesity (d) all of these 55. People suffering from hypertension are susceptible to

(a) heart attack (b) stroke

56. Hypertension is a result of increase in systolic arterial blood pressure more than ________ and diastolic pressure more than _________

(a) 150 mm Hg, 80 mm Hg (b) 140 mm Hg, 90 mm Hg (c) 100 mm Hg, 70 mm Hg (d) 120 mm Hg, 100 mm Hg

57. Anginal pain usually starts in the centre of the chest and spreads (a) towards lower abdomen

(b) down the left hind limb (c) down the left arm (d) down the right arm 58. Heart failure is a result of

(a) inability of heart to pump blood effectively.

(b) weakening of heart muscles.

(d) all of the above

59. A graphic record of electrical variation produced by the heart during one heart beat or cardiac cycle is called

(a) electrocardiogram (b) cardiogram

60. Father of Electrocardiography is

CENTERS: MUMBAI / DELHI / AKOLA / KOLKATA / LUCKNOW / NASHIK / GOA # 7

(a) William Harvey (b) Martin Black

61. In electrocardiograph, X and Y-axis represent

(a) time, voltage displacement (b) pulse, heart beat (c) voltage displacement, distance (d) time, impulse 62. T- wave is a

(a) broad upward wave (b) large upright triangular wave

63. T-wave represents

(a) ventricular contraction (b) atrial contraction (c) ventricular relaxation (d) atrial relaxation 64. Artificial pacemaker is powered by

(a) Pb battery (b) Cd battery (c) Ni battery (d) Ni-Cd battery 65. In case of ___________, artificial pacemaker can be surgically fitted.

(a) hypertension (b) angina pectoris

(a) 1-2 years (b) 2-5 years (c) 3-7 years (d) 8-10 years 67. Lymphatic system consists of

(a) lymph, lymphatic capillaries, blood vessels.

(b) lymph, lymphatic capillaries, lymphatic vessels and lymph nodes.

(d) lymph, lymphatic vessels and lymph nodes.

68. Lymph is present in the

(a) lymph vessels (b) lymphatic capillaries

69. Lymph differs from plasma in having

(a) RBCs (b) less protein (c) WBCs (d) platelets

70. Which of the following is not correct about lymphatic capillaries?

(a) They are thin walled vessels in all the tissue spaces.

(b) They are interwoven with blood capillaries.

(d) They are lined by endothelium of thin and flat cells.

71. Lymphatic capillaries unite to form larger tubes called.

(a) lymph node (b) lymphatic vessels (c) lymphatic duct (d) lymphatic system

CENTERS: MUMBAI / DELHI / AKOLA / KOLKATA / LUCKNOW / NASHIK / GOA # 8

72. The lymphatic vessels coming from the ______________ are milky in appearance.

(a) stomach (b) heart (c) intestine (d) liver

73. The lymphatic vessels coming from intestine are milky in appearance due to absorbed (a) glucose (b) amino acids (c) fats (d) vitamins 74. The right lymphatic duct

(a) receives lymph from left upper extremity (b) stores digestive food

(d) drains lymph from the upper right side of the body.

75. Lymph nodes are maximum in

(a) neck (b) armpit (c) groin (d) all of these

76. Which of the following statement is not correct about lymph nodes?

(a) They act as filters

(b) They also produce lymphocytes and antibodies.

(d) They play an important role in clotting of the blood.

77. The sample of a healthy human blood is

(a) alkaline (b) acidic (c) neutral (d) none of these 78. Which of the following are plasma proteins?

(a) Haemoglobin (b) Serum albumin (c) Fibrinogen (d) Both (b) and (c) 79. Which granulocyte shows anti-histamine property?

(a) Neutrophils (b) Eosinophils (c) Basophils (d) None of these 80. Which part of the circulatory system is related with the heart?

(a) Coronary (b) Portal (c) Rental (d) Hepatic

81. __________ lies in the wall of right auricle below the opening of superior vena cava.

(a) Sinoatrial node (b) Atrio-Ventricular node

82. In atherosclerosis, what basically happens is

(a) deposition of hard, stony material in the arterial wall (b) hardening and loss of elasticity of arterial wall (c) accumulation of cholesterol in the arterial wall.

(d) thinning of the arterial wall.

83. In blood, ____________ maintains pH of internal environment by balancing acidity and alkalinity.

(a) haemoglobin (b) leucocytets (c) platelets (d) plasma

CENTERS: MUMBAI / DELHI / AKOLA / KOLKATA / LUCKNOW / NASHIK / GOA # 9

84. ______________ differentiate into macrophages or scavenger cells which remove the damages and

dead cells to clean the body.

(a) Monocytes (b) Lymphocytes (c) Neutrophils (d) Basophils 85. Blood platelets are produced in the red bone marrow from a type of giant myeloid cells called

(a) megakaryocytes (b) erythrocytes (c) leucocytes (d) monoblasts 86. Which one of the statement is incorrect with reference to pericardial fluid?

(a) It is secreted by the serous pericardium.

(b) It is present between the two layers of pericardium.

(d) It reduces the friction between the heart wall and the surrounding tissues during the heart beats.

87. When mitral valve closes, the blood does not flow back into the

(a) right auricle (b) left auricle (c) right ventricle (d) aorta

88. While fibrous threads which extend from the papillary muscles and prevent the back flow of blood is called

(a) columnae carneae (b) chordae tendinae (c) papillary muscles (d) smooth muscles 89. The specialized tissue concerned with the stimulation and the regulation of heart beat is

(a) connective tissue (b) epithelial tissue (c) nodal tissue (d) none of these 90. When the S.A. node is stimulated, the chambers of the heart which contract are the

(a) right auricle and right ventricle (b) left auricle and left ventricle (c) left ventricle and right ventricle (d) right and left auricles

91. If the pace maker is absent in the heart, (a) only auricles will contract

(b) only ventricles will contract

(d) cardiac muscles will not contract in a co-ordinate manner.

92. Adrenaline directly affects

(a) Islets of langerhans (b) sinoatrial node

(a) capillaries (b) arterioles (c) small arteries (d) aorta 94. Valves are found in veins to check the backflow of the blood flowing under

(a) low pressure (b) high pressure (c) no pressure (d) very high pressure 95. When the blood flows from heart to rest of the organs and back to heart, it is referred as

(a) systemic circulation (b) pulmonary circulation (c) open circulation (d) single circulation

CENTERS: MUMBAI / DELHI / AKOLA / KOLKATA / LUCKNOW / NASHIK / GOA # 10

96. Cardiac output signifies

(a) The amount of blood entering the heart per unit time (b) The amount of blood entering the lung per unit time (c) The amount of blood leaving the heart per unit time (d) The amount of blood leaving the lung per unit time.

97. Pulse wave is caused by

(a) systole of the auricles (b) diastole of the auricles (c) systole of the left ventricle (d) systole of the right ventricle

98. The pressure which the blood exerts on the wall of the arteries when the ventricles are maximally relaxed is called

(a) systolic blood pressure (b) diastolic blood pressure

99. Angina pectoris occurs when

(a) coronary arteries become narrow and hard

(b) during exertion, when heart demands more oxygen.

(d) deposition of fatty substance in arteries.

100. QRS – complex represents

(a) spreading of impulse from AV mode to Purkinje fibres (b) spreading of impulse from SA node to Purkinje fibres

(d) spreading of impulse from AV node to bundle of His.

ANDHERI / BORIVALI / DADAR / CHEMBUR / THANE / MULUND/ NERUL / POWAI TOPIC: CIRCULATION (ANSWER KEY)

1. (b) 2. (d) 3. (b) 4. (b) 5. (b)

6. (b) 7. (a) 8. (b) 9. (b) 10. (a)

11. (c) 12. (c) 13. (b) 14. (a) 15. (b)

16. (a) 17. (a) 18. (a) 19. (c) 20. (c)

21. (b) 22. (c) 23. (d) 24. (a) 25. (a)

26. (c) 27. (a) 28. (b) 29. (c) 30. (c)

31. (d) 32. (c) 33. (b) 34. (a) 35. (b)

36. (a) 37. (b) 38. (c) 39. (a) 40. (d)

41. (c) 42. (d) 43. (d) 44. (d) 45. (c)

46. (b) 47. (c) 48. (b) 49. (d) 50. (a)

51. (b) 52. (c) 53. (b) 54. (d) 55. (d)

56. (b) 57. (c) 58. (d) 59. (a) 60. (d)

61. (a) 62. (a) 63. (c) 64. (d) 65. (d)

66. (c) 67. (b) 68. (d) 69. (b) 70. (c)

71. (b) 72. (c) 73. (c) 74. (d) 75. (d)

76. (d) 77. (a) 78. (d) 79. (b) 80. (a)

81. (a) 82. (c) 83. (a) 84. (a) 85. (a)

86. (c) 87. (b) 88. (b) 89. (c) 90. (d)

91. (d) 92. (b) 93. (a) 94. (a) 95. (a)

96. (c) 97. (c) 98. (b) 99. (c) 100. (c)

ANDHERI / BORIVALI / DADAR / CHEMBUR / THANE / MULUND/ NERUL / POWAI

MH-CET 2015

ASSIGNMENT SERIES

(Strictly Based on MH-CET Pattern of Examination)

SUBJECT : Zoology

STANDARD : XII

^th

In document Bio XII Botany (Page 135-146)