NCERT CLASS 11 | TOPIC : BODY FLUIDS AND CIRCULATION | QB-2 | NEET BIOLOGY ONLINE TEST

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NCERT CLASS 11 | TOPIC : BODY FLUIDS AND CIRCULATION | QB-2 | NEET BIOLOGY ONLINE TEST

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It contains 81 important questions. Choose the most correct answer. Then check your answer. Try again if there are errors. Regards : www.onlinetest.kalvisolai.com

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1 ➤ 101. First cardiac sound (lub) is associated with

(a) Closure of tricuspid and bicuspid valves (b) Opening of tricuspid valves (c) Closure of semilunar valves (d) Opening of semilunar valves

2 ➤ 102. Which of the following statement is wrong for second cardiac sound?

(a) It is heard as dup (b) It is produced due to the closure of semilunar valves (c) It is clinically significant (d) It is clinically nonsignificant

3 ➤ 103. Which of the following is correct about human heart?

(a) The volume of both atria > the volume of both ventricles (b) The volume of both ventricle > the volume of both atria (c) The volume of both atria = the volume of both ventricles (d) Ventricles are upper chambers and atria are lower chambers in our heart.

4 ➤ 104. Which of the following blood vessels possess semilunar valves?

(a) Vena cava and aorta (b) Aorta and pulmonary artery (c) Pulmonary artery and pulmonary vein (d) Pulmonary vein and vena cava

5 ➤ 105. The heartbeat of a person increases at the time of an interview due to the secretion of

(a) Renin (b) Adrenaline (c) ADH (d) ACTH

6 ➤ 106. Which of the following set is correct?

(a) Sebum – Analgesic (b) Vitamin – Nicotine (c) Corpus callosum – Graafian follicle (d) Bundle of His – Purkinje fibres

7 ➤ 107. Cardiac centre lies in

(a) Medulla oblongata (b) Pons (c) Cerebrum (d) Epithalamus

8 ➤ 108. Cardiac centre can moderate the cardiac functions through

(a) Somatic neural system (b) Parasympathetic nervous system only (c) Autonomic nervous system (ANS) (d) Sympathetic nervous system only

9 ➤ 109. Neural signal through the sympathetic nervous (part of ANS) increases the cardiac output because of

(a) Increasing the rate of heat beat (b) Increasing the strength of ventricular contraction (c) Both (a) and (b) (d) Increasing the stimulation of vagus nerve

10 ➤ 110. Parasympathetic neural signal decreases the cardiac output by

(a) Decreasing the rate of heartbeat (b) Decreasing the speed conduction of action potential (c) Both (a) and (b) (d) Increasing adrenal medulla hormones secretion

11 ➤ 111. Heartbeat increases

(a) on stimulation of sympathetic nerves (b) On stimulation of vagus nerve (parasympathetic nerve) (c) By adrenalin secreted by adrenal medulla (d) Both (a) and (c)

12 ➤ 112. Select the total number of incorrect matching from the following:

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(A) ECG–Electro Cardio Gram

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(B) AVN–Atrio Ventricular Node

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(C) SAN–Sino Atrial Node

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(D) WBC–White Blue Cells

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(E) RBC–Red Blood Cells

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

13 ➤ 113. Heartbeat is accelerated by

(a) Sympathetic nerves and acetylcholine (b) Cranial nerves and adrenaline (c) Cranial nerves and acetylcholine (d) Sympathetic nerves and epinephrine

14 ➤ 114. Body has the capacity to alter

(a) Stroke volume (b) Heart rate (c) Cardiac output (d) All of these

15 ➤ 115. To obtain standard ECG a patient is connected to the machine with three electrical leads attached to the following parts except

(a) Right wrist (b) Left wrist (c) Right ankle (d) Left ankle

16 ➤ 116. Find out the incorrect statement from the following:

(a) ECG is a graphical representation of the electrical activity of the heart during cardiac cycle. (b) For a detailed evaluation of the heart’s function, multiple leads are attached to the chest region (chest leads). (c) P, R, T are +ve wave whereas Q and S are –ve wave in standard ECG. (d) Starting of T-wave marks the end of systole of ventricles.

17 ➤ 117. Select the correct statement from the following:

(a) ECG is of great clinical insignificance. (b) By counting the number of QRS complexes (in given time period), we can the find pulse rate . (c) The contraction of atria starts with starting of Q wave. (d) T-wave represent repolarization of atria.

18 ➤ 118. Electrocardiogram is a measure of

(a) Heart rate (b) Ventricular contraction (c) Volume of blood pumped (d) Electrical activity of heart

19 ➤ 119. P-wave represents

(a) Depolarization of ventricles (b) Repolarization of ventricle (c) Repolarization of atria (d) Depolarization of atria

20 ➤ 120. QRS complex represents the

(a) Depolarization of ventricles (b) Repolarization of ventricles (c) Repolarization of atria (d) Depolarization of atria

21 ➤ 121. T-wave on an ECG represents

(a) Depolarization of ventricles (b) Repolarization of ventricles (c) Repolarization of atria (d) Depolrization of atria

22 ➤ 122. In an adult, normal blood pressure is

(a) 80/120 mmHg (b) 100/80 mmHg (c) 120/80 mmHg (d) 100/120 mmHg

23 ➤ 123. Normal BP = 120/80 mmHg in an adult. In this measurement 120 mmHg is the _________ pressure and 80 mmHg is _________ pressure.

(a) Diastolic, systolic (b) Systolic, diastolic (c) Pulse, diastolic (d) Pulse, systolic

24 ➤ 124. The difference of blood pressure between systolic and diastolic phase is

(a) 10 mmHg (b) 40 mmHg (c) 120 mmHg (d) 180 mmHg

25 ➤ 125. Which one indicates hypertension?

(a) 120/80 mmHg (b) 80/120 mmHg (c) 140/90 mmHg (d) 40/60 mmHg

26 ➤ 126. Pulmonary circulation includes

(a) Pulmonary artery (b) Pulmonary vein (c) Lungs (d) All of these

27 ➤ 127. The instrument by which BP of human beings are determined is called

(a) Ultrasound (b) BP meter (c) Stethoscope (d) Sphygmomanometer

28 ➤ 128. The instrument used to hear heartbeats is called

(a) Electrocardiograph (b) Sphygmomanometer (c) Stethoscope (d) Haemometer

29 ➤ 129. A system which supplies blood to heart is

(a) Portal system (b) Pulmonary system (c) Coronary system (d) All of these

30 ➤ 130. Hepatic portal system starts from

(a) Digestive system to liver (b) Kidney to liver (c) Liver to heart (d) Liver to kidney

31 ➤ 131. A unique vascular connection that exist between the digestive tract and liver is called

(a) Renal portal system (b) Hypothalamic-Hypophyseal portal system (c) Hepatic portal system (d) All the above

32 ➤ 132. Pulmonary circulation is required for

(a) Nutrient supply to lungs (b) Elimination of waste products from the lungs (c) Oxygenation of deoxygenated blood (d) Nutrient supply to heart

33 ➤ 133. Which of the following is true about hypertension?

(a) It leads to cardiac diseases. (b) It affects vital organs like brain and kidney. (c) It repeats the check of blood pressure of an individual as 140/90 or higher, it shows hypertensions. (d) All the above

34 ➤ 134. Find the incorrect matching:

(a) CAD–Atherosclerosis (b) Angina–Angina pectoris (c) Stroke volume–Beat volume (d) Heart failure–Heart attack

35 ➤ 135. Match the Column I with Column II

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A. Heart failure – 1. Heart muscle is suddenly damaged by an inadequate blood supply.

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B. Cardiac arrest – 2. Chest pain due to inadequate O2 reaching the heart muscles.

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C. Heart Attack – 3. Atherosclosis

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D. Coronary Artery disease – 4. Heart not pumping blood effectively enough to meet the needs of the body (CAD).

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E. Angina pectoris – 5. Heart stops beating

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(a) [A] 4 [B] 5 [C] 1 [D] 3 [E] 2 (b) [A] 4 [B] 5 [C] 3 [D] 1 [E] 2 (c) [A] 4 [B] 3 [C] 5 [D] 2 [E] 1 (d) [A] 5 [B] 4 [C] 2 [D] 3 [E] 1

36 ➤ 136. It is often referred to as atherosclerosis, it affects the blood vessels that supply blood to the heart muscles. It is caused by the deposition of Ca, fat, cholesterol and fibrous tissues making the lumen of arteries narrow

(a) CAD (b) SCID (c) Blue baby (d) myocarditis

37 ➤ 137.

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A) B) C) D)

38 ➤ 138.

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A) B) C) D)

39 ➤ 139.

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A) B) C) D)

40 ➤ 140.

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A) B) C) D)

41 ➤ 141.

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A) B) C) D)

42 ➤ 142.

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A) B) C) D)

43 ➤ 143.

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A) B) C) D)

44 ➤ 144.

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A) B) C) D)

45 ➤ 145.

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A) B) C) D)

46 ➤ 146. Rate of heartbeat is the highest in

(a) Whale (b) Elephant (c) Mouse (d) Man

47 ➤ 147. Which of the following pair of terms represent both one and the same thing?

(a) Plasma–Serum (b) Atrioventricular node–Pacemaker (c) Leucocytes–Lymphocytes (d) Mitral valve–Bicuspid valve

48 ➤ 148. How many times a red blood corpuscle will have to pass through the heart in its journey from hepatic artery to the aorta?

(a) Two times (b) Only once (c) Several times (d) Four times

49 ➤ 149. Maximum pressure of blood is experienced

(a) When blood enters from left atrium to aorta (b) When blood enters from right atrium to aorta (c) When blood enters from left ventricle to aorta (d) When blood enters from right ventricle to aorta

50 ➤ 150. The blood circulation, which starts and ends into capillaries is

(a) Portal circulation (b) Renal circulation (c) Hepatic circulation (d) Lymphatic circulation

51 ➤ 151. Which one of the following is absent in the human beings?

(a) Hypophyseal-hypothalamic tract (b) Hepatic portal vein (c) Renal portal vein (d) None of these

52 ➤ 152. Assertion: Simple organism use special fluids within their bodies to transport materials.

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Reason: Boold is the only fluid used by higher organism including human for transport of certain substances.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

53 ➤ 153. Assertion: Closed circulatory system is more effective than open type.

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Reason: The closed circulatory system considerably enhances the speed, precision and efficiency of circulation.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

54 ➤ 154. Assertion: Cardiac output rises during exercise.

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Reason: Cardiac output helps in less oxygen consumption.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

55 ➤ 155. Assertion: Plasma retains water.

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Reason: Plasma contains an osmotic protein called albumin.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

56 ➤ 156. Assertion: An artificial pacemaker can replace the sinoatrial node of heart.

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Reason: This is because, an artificial pacemaker is capable of stimulating the heart electrically to maintain its beats.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

57 ➤ 157. Assertion: When heart stops beating it is known as cardiac arrest.

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Reason: Heart attack occur due to cardic arrest.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

58 ➤ 158. Assertion: Plasma without the clotting factors is called serum.

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Reason: Serum contain immunoglobulins.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

59 ➤ 159. Assertion: Heart of fish contains only deoxygenated blood.

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Reason: Oxygenated blood do not return back to the heart in fishes.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

60 ➤ 160. Assertion: Basophils are involved in inflammatory reaction.

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Reason: Basophils use to secrete histamine,serotonin,heparin, etc.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

61 ➤ 161. Assertion: The reduction in number of platelets can lead to clotting disorders.

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Reason: Platelets release a variety of sustances most of which are involved in the clotting of blood.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

62 ➤ 162. Assertion: Blood pressure is arterial blood pressure.

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Reason: It is measured by sphygmomanometer. Assertion and Reason Questions

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

63 ➤ 163. Assertion: Body has the ability to alter cardiac output.

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Reason: Body has the ability to alter the stroke volume as well as the heart rate.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

64 ➤ 164. Assertion: QRS complex represent the depolarization of atria.

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Reason: Biggining of the T-wave marks the end of systole.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

65 ➤ 165. Assertion: WBCs accumulate at the site of wounds by diapedesis.

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Reason: It is the squeezing of leucocytes from the endothelium.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

66 ➤ 166. Assertion: Opening of pulmonary trunk and aorta are guarded by valves.

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Reason: These valves prevent backward flow of blood in ventricles

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

67 ➤ 167. Assertion: SA node is called pacemaker of heart.

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Reason: It is responsible for initiating and maintaining the rhythm of heart

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

68 ➤ 168. Assertion: The wall of left ventricle is thickest among all four chambers of heart.

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Reason: The left ventricle has to pump blood to whole body.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

69 ➤ 169. Assertion: The velocity of flow of blood is minimum in capillaries.

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Reason: The surface area of capillaries are maximum among all blood vessels.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

70 ➤ 170. Assertion: Human heart is myogenic.

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Reason: Normal activities of heart are regulated intrinsically by specialized muscle.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

71 ➤ 171. Assertion: Circulation in amphibians and reptiles is called incomplete double circulation.

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Reason: Deoxygenated and oxygenated blood get mixed up in the single ventricle pumps out mixed blood.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

72 ➤ 172. Assertion: Spleen is called graveyard of RBCs.

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Reason: RBCs are destroyed in spleen after completing their average life span of 60 days.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

73 ➤ 173. Assertion: Serum is able to clot blood.

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Reason: Serum contains all clotting factors required for clotting of blood.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

74 ➤ 174. Assertion: Individual with ‘O’ blood group is considered to be universal donor.

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Reason: Blood of ‘O’ blood group individual do not contain antigens on their RBCs.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

75 ➤ 175. Assertion: Erythroblastosis feotalis not observed during first pregnancy although foetus is Rh positive and mother is Rh negative.

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Reason: Rh antigens of foetus do not get exposed to Rh negative blood of mother in first pregnancy as the two bloods are well separated by placenta.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

76 ➤ 176. Assertion: Atria and ventricle do not contract simultaneously.

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Reason: It occurs due to AV nodal delay.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

77 ➤ 177. Assertion: Starting of ventricular diastole leads to closure of semi lunar valves.

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Reason: Ventricular diastole leads to fall in ventricular pressure.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

78 ➤ 178. Assertion: If we cut nerve supply to human heart, there will be no effect on heart beat.

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Reason: Human heart is myogenic in nature.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

79 ➤ 179. Assertion: An injury or trauma stimulates the platelets to release certain factors which regulate the mechanism of coagulation.

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Reason: Calcium iron is very important for clotting of blood.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

80 ➤ 180. Assertion: The number of eosinophils increases in patients suffering from asthma.

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Reason: Asthma is an allergic disease.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

81 ➤ 181. Assertion: The disease erythroblastosis feotalis can be avoided in second pregnancy if Rh negative maternal blood exposed to Rh positive foetal blood during delivery of first child.

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Reason: If mother is administered with anti Rh antibodies immediately after the delivery of first child. previous year questions

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion. (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion. (c) If the assertion is true but the reason is false. (d) If both the assertion and reason are false.

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