Biology Objective Questions and Answers: Body Fluids and Circulation
Review structured MCQ sets for NEET Biology Body Fluids and Circulation. Built according to official NEET guidelines, these downloadable questions support daily revision and core concept reinforcement.
Download Body Fluids and Circulation MCQs with Answers
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Multiple Choice Questions
(a) anti-B
(b) anti-A
(c) nil
(d) anti-A and anti-B
Show Answer & Explanation
Answer: (d) anti-A and anti-B
Explanation:
1. O group (universal donor) cannot receive A and B blood because anti-A and anti-B antibodies.
(a) A+
(b) AB+
(c) B+
(d) O+
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Answer: (b) AB+
Explanation:
1. This is so because person with AB blood group neither have anti-A nor anti-B antibodies but have both antigens (A and B).
(a) A
(b) B
(c) O
(d) AB
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Answer: (a) A
Explanation:
1. Person having A blood group have antigen A in RBC and antibody b in plasma.
(a) Blood
(b) Plasma
(c) Lymph
(d) Serum
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Answer: (c) Lymph
Explanation:
1. Lymph acts as 'middle man' which transports oxygen, food materials, hormone etc. to the body cells and bring carbon dioxide and other metabolic wastes, from the body cells to blood and then finally pour the same into the venous system.
(a) Filter the lymph
(b) Contain phagocytic cells
(c) Responsible for lymphocyte activation
(d) All of these
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Answer: (d) All of these
Explanation:
1. . Lymph is filtered through lymph nodes and they are abundant in neck, groin and armpits. . Lymph nodes contain phagocytic cell which help to remove pathogens. . Lymph nodes produce lymphocytes and then lymph transports lymphocytes and antibodies from the lymph nodes to the blood.
(a) More proteins and less waste products
(b) Less proteins and more waste products
(c) More proteins and more waste products
(d) Less proteins and less waste products
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Answer: (b) Less proteins and more waste products
Explanation:
1. Blood Lymph . Consist mainly of plasma, RBC, . Consist of plasma, WBC. WBC and platelets. . In plasma, more protein, Ca and . In plasma, have few protein, Ca phosphorus. and phosphorus. . Amount of CO2 and metabolic . Amount of CO2 and metabolic waste is normal. waste is much more.
(a) P-wave
(b) QRS-wave
(c) T-wave
(d) Both P and T-wave
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Answer: (c) T-wave
Explanation:
1. R P Q S T P Wave : Depolarisation of atria leads to contraction QRS wave : Depolarisation of ventricle, which initiates ventricle contraction.
2. T wave : Represents the return of the ventricles from the excited to normal state i.e., repolarization of the ventricles occur.
3. End of T-wave mark the end of systole.
(a) Joint diastole-ventricular systole-auricular systole
(b) Auricular systole-ventricular systole-complete cardiac diastole
(c) Auricular systole-joint diastole-ventricular systole
(d) Auricular systole-ventricular diastole-joint diastole
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Answer: (b) Auricular systole-ventricular systole-complete cardiac diastole
Explanation:
1. Auricular systole 0.1 s Ventricular systole 0.3 s Cardiac cycle (0.8 second).
(a) 0.3 second
(b) 0.5 second
(c) 0.4 second
(d) 0.7 second
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Answer: (b) 0.5 second
Explanation:
1. Ventricular systole duration = 0.3 seconds Ventricular diastole duration = 0.8 – 0.3 = 0.5 seconds.
(a) A vein starts from an organ and ends up in heart
(b) A vein starts from an organ and ends up in another organ
(c) A vein starts from heart and ends up in lungs
(d) None of these
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Answer: (b) A vein starts from an organ and ends up in another organ
Explanation:
1. Heart Artery Vein Portal system Portal Organ 1 Organ 2 Vein.
(a) a(iv), b(iii), c(i), d(ii)
(b) a(iii), b(iv), c(ii), d(i)
(c) a(iii), b(i), c(iv), d(ii)
(d) a(ii), b(i), c(iv), d(iii)
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Answer: (c) a(iii), b(i), c(iv), d(ii)
Explanation:
1. Capillaries are the narrowest blood vessels through which the exchange of gases and nutrient between the blood and the tissue fluid occurs.
2. Veins have valves to prevent backflow of blood.
3. Aorta is an artery, which has thick elastic membrane in tunica interna.
4. Tunica media : It is the middle layer in the wall of artery and have smooth muscles mainly.
(a) Crustaceans
(b) Cephalopods
(c) Insects
(d) Gastropods
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Answer: (b) Cephalopods
Explanation:
1. Cephalopods have closed circulatory system, rest all i.e. crustaceans, insect and gastropods have open circulatory system.
(a) Fishes, Amphibians and Reptiles
(b) Reptiles and Birds
(c) All mammals
(d) All vertebrates
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Answer: (d) All vertebrates
Explanation:
1. Hepatic portal system is characteristic feature of all vertebrates.
(a) Vagus nerve
(b) Parasympathetic nerve
(c) Sympathetic nerve
(d) All of these
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Answer: (c) Sympathetic nerve
Explanation:
1. This is so because sympathetic nerve endings release adrenaline which stimulates the SAN. This accelerates the heart beat, the strength of ventricular contraction and thereby the cardiac output.
(a) Heart valves
(b) SA node
(c) Bundle of His
(d) Purkinje fibres
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Answer: (a) Heart valves
Explanation:
1. In case of defective or damaged heart valves, their improper closure leads to leakage of blood which produces an abnormal sound referred to as heart murmur.
(a) a(iii), b(i), c(ii)
(b) a(i), b(iii), c(ii)
(c) a(ii), b(i), c(iii)
(d) a(i), b(ii), c(iii)
Show Answer & Explanation
Answer: (a) a(iii), b(i), c(ii)
Explanation:
1. Tricuspid valves are AV valve present between right atrium and right ventricle.
2. Bicuspid valves are AV valve present between left atrium and left ventricle.
3. Semilunar valves are present at the openings of aortic and pulmonary aorta.
(a) a(iii), b(ii), c(i)
(b) a(i), b(ii), c(iii)
(c) a(ii), b(iii), c(i)
(d) a(i), b(iii), c(ii)
Show Answer & Explanation
Answer: (c) a(ii), b(iii), c(i)
Explanation:
1. Fibrinogen forms fibrin strands during coagulation.
2. These strands forms a network and the meshes of which are occupied by blood cells, this structure finally forms a clot.
3. Antibodies are derived from γ-Globulin fraction of plasma proteins which means globulins are involved in defence mechanisms.
4. Albumin is a plasma protein mainly responsible for BCOP.
(a) Erythrocytes
(b) Leucocytes
(c) Neutrophils
(d) Thrombocytes
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Answer: (d) Thrombocytes
Explanation:
1. Deduction in thrombocytes (platelets) can cause clotting disorder, leading to excessive loss of blood from the body.
(a) Lacking globulins
(b) Lacking albumins
(c) Lacking clotting factors
(d) Lacking antibodies
Show Answer & Explanation
Answer: (c) Lacking clotting factors
Explanation:
1. Serum is plasma without clotting factors.
2. It never clot.
(a) Less than that in the venae cavae
(b) Same as that in the aorta
(c) More than that in the carotid
(d) More than that in the pulmonary vein
Show Answer & Explanation
Answer: (d) More than that in the pulmonary vein
Explanation:
1. Blood pressure in different blood vessels: Artery > Arteriole > Capillary > Venule > Vein.
(a) Red bone marrow
(b) Kidney
(c) Liver
(d) Spleen
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Answer: (c) Liver
Explanation:
1. This option, Liver, is the correct choice, as it agrees with the standard NCERT account of this topic.
(a) O only
(b) A and B only
(c) A, B and AB only
(d) A, B, AB and O
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Answer: (d) A, B, AB and O
Explanation:
1. This option, A, B, AB and O, is the correct choice, as it agrees with the standard NCERT account of this topic.
(a) Reduce both heart rate and cardiac output
(b) Heart rate is increased without affecting the cardiac output
(c) Both heart rate and cardiac output increase
(d) Heart rate decreases but cardiac output increases
Show Answer & Explanation
Answer: (a) Reduce both heart rate and cardiac output
Explanation:
1. Post-ganglionic fibers of parasympathetic nervous system secrete acetylcholine which decrease heart rate and cardiac output.
Practice MCQs for NEET Biology Body Fluids and Circulation
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FAQs
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